Ar9 not feeding An unramped bolt. If the BA barrel has EPC in the title, it should have the enhanced feed cone. I tried a few different brands such as Hornady (Defense, Duty, & Gunner), as well as Sierra. This lower requires a barrel with an aggressive feed ramp on the barrel to feed correctly. Jul 21, 2022 · Mated an Anderson ar-15 lower to gen 4 9mm upper with feed issues. While the AR9 and PCC market has begun to surge in popularity keep in mind that building an AR9 will most likely require tinkering, and may not be "plug and play" like a small frame AR (AR15). The other mag had a feeding issue causing the last round (only) to get pushed into the casing. Oct 1, 2018 · I’ve got a buddy who happens to have one of the psa 9mm carbines and he’s at his wits end with a feed issue he’s having. A place to discuss variants of the AR series that are chambered for pistol cartridges… Hand polished bottom feed ramp; Works with any standard 9mm bolts; Works with both colt and glock lowers; If ordering for an FM9, please let us know in the comments during checkout so we can modify the feed ramp to work! The AR was not designed for 9mm, there is a lot space between the mag and the chamber that the flat faced round like hollow points at times hit the top lip and not feed properly. Thanks! Since the ar9 is not a standardized platform not all parts play perfectly nice with each other. I followed the recommended things such as a standard Ar15 carbine spring, but I would continuously get a failure to feed. Yes macon will remachine and fix the feed cone on an aero barrel if you have issues. A place to discuss variants of the AR series that are chambered for pistol cartridges, including 9mm, 45ACP… Lots of 1980's-ish feed cones "look good" but fail miserably if feeding is ever so slightly out of alignment, or large cavity hollow points (HST) are involved. I cut small cones like the one pictured then the feed ramp by hand. 21K subscribers in the AR9 community. I was thinking of polishing the lower part of the chamber throat. Usually they'll feed FMJ fine, but not HP or flat nose bullets. If it isnt %100 reliable then I wouldn't use it. Are they bad lowers? Maybe not but considering the wide variety of results and half of the time people post about issues it seems to related to a spikes lower and the other half of the time its a different brand lower. the long known feeding issue from mags sitting too low I have 2 Spikes lowers, the mag catch is too low indeed (that may contribute to feeding issues), and OEM Glock mags have a couple millimeters of play. Ran around 1000 rounds so far, not a single malfunction. Cartridge base may not be able to lift into position smoothly to drop into bolt face pocket. Add in a dead blow buffer for $50 and my FFL fee of $20 and I could have been off to the races for a total of $653 not counting magazines or an optic. Also tried to use same set up with Endomag PMAG inserts, carbine spring, and 5. Make sure your block isn’t to far in or out of magwell & affecting feed ramp. They're out. If you are sure that the bolt is contacting the cartridge in the proper place, then your mag depth should be good. I put a box of 147 grain through it and had 3 fail to feeds where the round never made it to battery and actually jammed the bullet into the casing. EVERY build including factory built is a little different based on parts and upper type and configuration. The Stribog feels pretty much just like a regular blowback AR9. 19K subscribers in the AR9 community. You've been around longer than most. 5 oz KAW and the spring is a standard carbine buffer spring. I have a couple AR9s and one of them is using the CMMG RDB system (with colt mags). I had the same issues with hollow points you mentioned. But possibly 16" barrel length is not giving it as much pressure as say a 4". Anyone having to modify their block to fit a milspec upper? Preliminary search doesn't show this being a thing. Roll pin not included. I used a colt mag insert from PSA & it is still working perfectly in my buddies build. Solved all my feeding issues. One of my shooting buddies uses them. workin out kinks in a new build is part of the fun. I need to get some hollow points to test. Purchased a new UDP-9 and have been using exclusively Glock factory mags. First AR9 build. Just a reminder, since I'm getting emails that Ballistic Advantage 9mm barrels are on sale. I'm not saying a feed cone in general is bad. They said this. No They should come already with the face feed ramp chamfer already turned to aid in feeding the 9mm round. The barrels are a specific cut and taper to accommodate the 633's unique FSB/handguard combo to be as clone correct as possible, so of course, the barrel does not feature an enhanced feed cone geometry because that was not a feature when the RO633 was relevant with the DOE. Starting life as a raw 9mm 1/10 twist blank, we machine them in our shop for maximum concentricity, accuracy and include the special hand polished feed cone we have developed to ensure smooth feeding. Try a softer one to slow the forward speed of the bolt. Having said that, my BA barrel didn’t have any problems feeding FMJ. I fired hundreds of rounds from Glock mags through my KVP builds without feed issues. I'm not sure about how well they help feeding, but what they're really good for is taking up the huge amount of space between the feed lips of the mag and the barrel in GLonK setups. In my experiance. One with a less aggressive 360 taper and one with a indexed barrel with an aggressive feed ramp. However when it does feed the last round the LRBHO does catch. Hornaday Critial Duty/Critical Defense should feed fine. So far after 2 stripped lowers from PSA I've built with Kaw Valley Precision barrels and Aero uppers and this BM9 both have similar, if not identical, integrated feed ramps on the barrel chamber face. Feb 1, 2021 · If you are willing to put in the time and effort, you can build your own AR9 with specific components that will can make it very reliable. Luckily, I have not had to resort to the cleaning rod since that first time. Im Running an fm9 upper and lower As far as feed ramps go, most ar9's have feed cones not feed ramps. KAK 9mm buffers 8. Feeding issues are almost always fixed by using a barrel with a better feed cone that leads into the chamber. Feed cone issue. 12 votes, 36 comments. Buffer+bolt should be 22-24oz, standard carbine spring. It’s completely stock. The aero/BA barrel feed ramp has an issue so just buy a bare upper and better barrel. Drums, mags, etc. Question, how compatible are ar9 barrels? Does anyone sell one that has a feed ramp that is a drop in replacement? So am I, didn't even know there was such thing as a DI AR9. It is a little stiff trying to get the magazine seated, but once the magazine follower breaks in middle seat easier. Mine is already complete but i have not take it to the range yet. I took my fm9 out shooting for the first time this weekend and had a few last round jams with the JHP. The PSA AR9 features a flat top design, offering the flexibility to choose your preferred sighting system. There is Zero issue with Aero upper itself. There is no mil-spec for the "AR9". Seems that it doesn't have a feed cutout on the bottom to guide. Duramags worked fine and did not need trimming. I’ve put too much time into building these for them to not function properly. Aug 7, 2020 · Put a Taccom feed ramp in the upper & it will cure your Glock feed/mag problems. At first I was running a flat 308 spring. Pcc's make awesome home defense guns but they have to be reliable. Solution Part Three – I have learned over the years that all AR-15 recoil springs are not created equal. TNGunOwners. Beware of scammers using the Tennessee Gun Owners name, purporting to be Pro-2A lobbying organizations! Mar 20, 2011 · Before anyone says "take it back" its 100% a custom build, so with that out of the way heres the problem. The only issues I had were related to aftermarket mags not feeding the hollow points consistently. Obsolete, may cause bolt to jam in receiver. Palmetto sells barrels but comments say that the ramp is a lie. Dont use ammo with less than 1100fps, a blow back has to move a ton of mass, so anemic ammo will cause problems with a blow back, that dont occur when it is used in a handgun. https://taccom3g. Oct 22, 2021 · Macon Armory feed cone Left: Typical feed cone, Right: Improved/Enhanced feed cone. Below is an album showing the feeding issues. It can happen with rifles, but I’ve never seen it happen. 5" side charger AR9. That's what I did and it runs perfect now. 5 Stainless is excellent and already has feed ramp like Macon does. 5 with 7 quartersfor a spacer, feed ramp does not move, firing pin is good, the The 15rd mag I have for my EPC runs flawlessly, regardless of ammo, but my 33rd even if I only load 25 or so has feeding issues. Barrels are finished with a black nitride coating for extended durability. No problem feeding ball ammo but not consistent on JHP. I would do some extensive testing with your person defense ammo to make sure it runs reliably. 5 barrel. Feed cones are the lazy way of doing feed ramps. I have two coworkers who bought PSA AR9's and one runs fine and the other runs like garbage. Lots of advice on changing parts like buffers etc. It’s sporadic and he’s about to chuck the thing. Is that the best route to go? Thanks a ton! Oct 15, 2019 · My first build I had Rudy re-profile the feed cone and that fixed all my feed issues. I don’t know because I haven’t tried them all. Yea not a lot to grip even with 2 inch handgaurd hang over, but can always just hold mag well and if you run a can on end won’t matter anyways as definitely won’t shoot hand. PSA AR9 Ejection Problems. A heavier buffer, feed ramps, and better qc’d mags could definitely help, but if you’re not interested in spending a lot of time and money doing that, maybe it’s time to pass it for something more comprehensively reliable out of the box. Aug 10, 2017 · The explosion of the pistol caliber carbine is fascinating. You can "cut" a tongue using a dremel to fix this problem. Jan 16, 2025 · If you’re not happy with that, have no fear. I ended up buying a feed ramp from taccom. After every shot the next round is not feeding correctly so I have to pull the charging handle, eject the round that didn't feed then let the next go. My two home builds (Spikes Glock lower and Anderson lower w/Colt adapter) feed everything I put in them, including 147 gr. I guess it’s a common issue with ar9 because of the lack of a feed ramp so I picked up a Taccom after some googling and hope it does the trick. Black upper pic is FM, FDE upper is brigade for comparison Heavier = better feeding, better extraction, more reliable, no bolt bounce. I will have a write up in the future. I HIGHLY recommend I have a few AR9 barrels that run well, but no comparison Taccom is foolproof, they have a polished feed ramp, and a "top ramp" hood to prevent the bullet from flipping up. Feed issues seem to be fixed, but now, it consistently locks back with one round left in the mag (shooting 147gr JHP, only 10 rounds in the mag). The captured spring buffers and hydraulic buffers seem to trade mass for quiet operation not improved performance. Sorry for the bad quality Pic it’s from a video I was recording The Stag 9mm is the only single stage and I had an extra set of JP springs (<$20) so that's what I used. 2nd build (in progress), I just bought one of his barrels for the upper. Check out this video I made that talks about the feed issues and how to solve them. When feeding from the right they often push up and get stuck wedged at an angle into the barrel. It’s common on carry pistols from people chambering the same round over and over. The Colt lowers work on the other AR9 uppers with no issues. I used a standard carbine buffer with an AR10 buffer spring and a buffer spacer. Other than that "minor detail," the gun has run flawlessly, including the LRBHO. The shooting innovations one requires a modifed bolt to use their ramped barrel. the round wont feed up into the barrel properly. I had the bottom loading Hahn block and cmmg bolt. 56 probably makes the cartridge less easy to control and the nose might move too far in one direction for smooth feeding while the BCG slams up behind it. 2 of them are not listing the enhanced feed cone as a feature. I’ve stockpiled plenty but I don’t want to waste a lot right now. 6oz and 10oz did not help with any feeding issues. The Brn-9 upper is lifting ammo too high causing it to hit the top of the chamber. Current configuration is 7. The rifle is lucky to get more than 2 rounds off before it fails to eject and jams. Spikes tactical colt lower, spikes 9mm upper, fail zero bcg, precision firearms criterion barrel, atc pcc gold trigger, and just installed the maxim defense roller delayed system (previously had AR9 with Taccom super-feed barrel, 10oz buffer, standard carbine spring, FM lower using glock mags. The second issue is of much greater concern. Not every single round, but enough to be annoying. Some sellers don't include "EPC" in the title but say it's enhanced in the description. com/product/taccom-glock-lower-feedramp/ gerritm. The definitive fix for barrel feed issues is to send the barrel to Rudy at Macon Armory. I had my barrel feed ramp modified by Macon Armory and just got it back yesterday. The AR9’s charging handle can be easily swapped out for a preferred aftermarket option. He just did the taccom feed ramp extension and still had the issue. And it looks like the only way to fix it is by getting another barrel with a cone feed ramp SMH… open to any other ideas out there. I just received it and the bottom portion - the one that would actually go on the vise, does not fit into upper at all. I'm using a Faxon BCG that does have the M16 style extractor like he said. You can also polish your feed ramp on I am having trouble with my ar9, having multiple fail to feed, fail to eject, spent casings getting stuck in the trigger area, lrbho not working, bolt catch not working, mags not wanting to seat etc. The buffer is a 7. The issue hes having is that when ch His LRBHO fell apart he cant get it to feed properly at all. Posted: 5/5/2022 12:11:00 AM EST 20K subscribers in the AR9 community. 56mm AR-15 troubleshooting, like changing the buffer/spring, generally won't fix feeding/ejection issues in a 9mm blowback. Do not use. i use a dremel to create a feed ramp on my AR9 barrel. It all just depends if the bullet goes into the feed ramp or not. Yeah when I was first building my first and second ar-9 a epc lower with a decent upper kept jamming or not feeding right. Jul 23, 2016 · The problem was that it was stove piping/jamming the brass into the action. Muzzle is threaded 1/2 x 28. Open comment sort options. Try and find magazines with metal feed lips too, those tend to feed smoother Ordered a new FM upper, the feed cone looks improved over older pictures I could find online. I have a standard Aero stripped upper - it should fit. Anything PCC specific doesn’t work. In addition, to prevent breaking the bolt catch, the bolt over travel must be reduced by either spacers in the buffer tube or a longer PCC specific buffer. Including my USPSA competition gun. 25" barrel in my EPC9 and it eats everything including about 1/2 a dozen brands of HPs. He re-cuts/re-profiles the feed cone area so that it will feed anything. As an aside, I used to be a car mechanic and amateur race now. If you have any feed issues, you can have the barrel feed cone re-profiled by Macon Armory with their "guaranteed to feed" machining. I have the same 2 barrels. 8 oz buffer, 308 spring, stern defense conversion with Glock mag. One dude on YT just cut out his own. The only ones that I've seen to tackle this issue is Taccom3g with their super feed ramps and bolt carriers which have a ramp on the top as well as the bottom to mimic A barrel with a larger/improved feed cone, or sending the barrel out to have the feed cone reprofiled, should fix it. PSA AR9 pistol build, has worked great other then with one particular ammo. I haven't had any issues. In the case of feeding errors with hollows, it's usually due to where the magazine is resting along the path between the bolt face and the chamber. 308 carbine spring and buffer combo on my EPC. Took my AR9 to the range for the first time today and experienced two issues. They claim its perfectly normal and meant to function with ball ammo only. The 9mm feed cone at the chamber of most 9mm barrels has remained essentially unchanged since the 1980’s and was originally intended only for full metal jacket (FMJ) bullets, also called Aug 26, 2023 · Are there certain brands that my AR9 may not feed. The before pictures are of the same barrel, the guy just fixed the issue for me by changing the feed ramp profile and polishing it. Ar9's that reliably feed hollow points are great for home / self defense. The “gas key” on the toolcraft bolt has a different shape than a PSA gen4 bolt, and this resulted in the gas key scraping the charging handle, leaving aluminum shavings all over the inside of the gun. Conclusion – To prevent a 9MM AR Broken Bolt Catch select a 9mm AR buffer that is at least 3. The buffer is 5. Oh, I 100% trust you guys on this sub. A lot of AR9s have that problem cause there's no feed ramp. Mine shoots everything now. ☹️ Just brought a magpul drum and it will not feed properly. Bolt missing bottom feed lug on bolt face. I’m assuming my inconsistent feed issues are related to the round placement in the mag and Alright, so I've been having ammo feed issues with my FM 7. Anyone have any experience with feeding issues (FTF) with the EPC 9? The bullet seems to make contact about 1-3 mm below the chamber opening and not feed into the chamber at all. 5" barrel 3-lug Adaptor Either Griffin Revolution 9 or Octane 45 Faxon 9mm Bolt (had to shave down material to clear the auto sear trip mechanism of the echo) Kaw Valley Precision 10 oz Buffer Kaw Shoot me some photos and Ill take a look. Toolcraft 9mm bolt did not help either. Seems to feed 115 and 120ish grain ammo just fine. Now I know that's off topic and separate operating systems, but the point im aiming at, is to look at your other options before doing something as extreme as this for that failure. Budget - extar Next step up - foxtrot Mike and Aero EPC (aero had some feed lips issues, but seems resolved) Want to do some Frankenstein builds, the FM lowers with CMMG bolt & barrel is a good idea and a poor man's Banshee. Magazine reliability is a very tricky subject. The bigger feed cone allows for more flexibility in the feeding angle/height. Do you know how old the receiver is? I'm wondering if it's a problem with the older ones. So mags that suck in one unit may rock in another. Apr 2, 2021 · Do not use. Makes hollow point get stuck all the time as it's not pointy. The shorter OAL compared to 5. Also I bought a lower for it. FMJ ammo is pretty solid but Federal 124 grain HST has been an issue. Any suggestions? Need to see face of bolt lower lip round strip area from mag, as well as chamber radius cut to bolt face recess. Ok the pictures show what I'm dealing with. Second build my icrw beserker build actually fed wrong and ended up with a casing stuck in the chamber worst nightmare of my life was only its 10th round before that happened I chunked the mag straight in the trash. Javascript is disabled on your browser. That’s the beauty of AR9’s. Mutiny Arms upper, lower and bolt. Most manufacturers are still using a feed cone based on the 1980's Colt design that was intended only to feed round-nose military ball ammo. Could be the magazine itself, some lowers are picky. These are the same 9mm barrels we use in our 9mm conversions. Jun 28, 2020 · Here is a pic of what happens with the feeding issue I am having. The bigger feed cone solves most feed problems, and as a bonus, it should feed hollow point ammo. I am having failure to feed issues where the bullets will not quite make it into the chamber, but hang up on the face of the barrel and the bullet will be forced back into the case to some degree. Either way shoot me some photos and Ill have a look. It allows the barrel maker to skip the work of installing an alignment pin and unless the cone is oversized they have problem like you see. NOT GOOD! Since then, I've fired over 200 rounds of various weights and types of bullets and the odd failures to extract experienced when it was new have not recurred. If you like to tinker, there is plenty of forensic work to be had to achieve proper feeding at times. Hard to tell from the picture how much better it may be. First time shooting my SBR AR9 build today and I had an interesting feeding issue. 5. The 1911 was designed for a smooth bullet feed like a FMJ, but home defense users opt for HP, which has an edge rather than a tapered shape, causing feed issues. The issue is that it's not feeding into the chamber and jams. I talked with cmmg and they recommended replacing the bottom loading block with the top loading one. The main issue is the feeding of It may be a problem with some ST9G's and not others, because mine feeds perfectly with Rudy's barrel even though he says it shouldn't. I more wanted to document the situation on here better with video etc. I’d start w/several different mags. Since 9mm barrels don’t have feed ramps like AR rifle barrels the rounds weren’t being guided upwards high enough because the HP rounds were shorter and had a flat nose. They all work 100% now in live fire testing. Apr 12, 2021 · As you most likely already know an AR9 is a direct blowback system that doesn't use a gas impingement system not does it use locking lugs like a typical AR-15 so it has a greater recoil force that needs to be countered. For the bolt hold open, the frequently recommended solution is to get a pair of needlenose pliers and ever-so-gently bend the mechanism a tiny bit (do so at your own risk!) so it makes proper contact with the LRBHO shelf on the magazine follower. 5" guaranteed to feed barrel. Mad-Machinist can recut the feed cone, it helps solve that issue. Tried different grains too,115, 124, 147. My solution, might not work with a Drop-In. Is a Colt version, Spikes BCG, recievers, and 9mm buffer (the long one they make); BA 8 inch Barrel; Aero CH, rail, tube; JP The barrels are not plentiful. This is only my experience though and I’m not discounting yours. Macon Armory guaranteed-to-feed barrel Taccom superfeed barrel Aero Precision EPC barrel Ballistic Advantage EPC barrel Ghost Elite Upper (complete upper) Jacob Grey Firearms 9mm barrel Most barrel feed cones are inadequate. 5 ounces. Surprisingly, Magpul G17 mags don't move up and down that much. Two identically built AR9 can have a problem with a certain ammo and the other one won’t. I filled down the finger on the bolt catch so it wouldn't contact the back of the rounds. Use a quality recoil spring. Issue - not feeding 115gr hollow points or flat nosed 147gr. While certainly a fun type of weapon to shoot, the weapon type has not exactly been known for reliable operation. I don’t shoot it as much due to ammo prices. Then instead of the round being consistently guided to the feed cone, it would be free to move out of alignment. Works good, just want opinions on HP ammo regarding what has been found to be the most reliable. The Ar15 firing 223 or 5. (Not to mention the website of yours that has been a great help) Just posted a new article, and hopefully the last, about the EPC-9 feeding fixes. Reply reply More replies I talked to and emailed Spike's some pictures and videos of my feeding issues. The Taccom one works with a regular bolt but they have a optional top feed ramp like a 1911 and it only works with a modified bolt. They run perfectly. Jun 4, 2020 · Polishing *may* do it. The photo for the straight one looks enhanced. No blow back will feed reliably with a standard carbine buffer and spring. They're not all created equal. I only run round nose poly coated rounds through mine so luckily I have not experienced any feeding issues. While I have not yet sent it out, he gave me some info of what he knows about my parts. It is the deep feed cones that leave the case unsupported creates a danger to the uneducated, unwary shooter. Sold a PSA 4in AR9 Upper that I was not in love with, and it was primarily because it really struggled to feed JHP Ammo. Dec 29, 2021 · Failure to feed is almost always the result of the "feed cone" cut into the barrel leading into the chamber. The issue I'm having is that some but not all rounds have a failure to feed when coming from the right side of the magazine. . New. He has 2 barrels. Sharp edges at entrance to bolt face pocket may need to be beveled. On 2 of my 10 round OEM glock mags, one ran smooth but didnt allow for last round bolt hold open. 1st mag, 1st round failed to feed. As I understand it, there are 2 frequent problems with the EPC9 builds - chamber feed cone and bolt hold open. Now I have 3 working AR9 setups from those components, that shoot fine, and I have 2 Taccom barrels that I don't use and I'd better scrap. I replaced everything in my gun twice over. Sometimes double feed, sometimes failure to feed. I appreciate all the threads on here that have been a great help in detailing various issues on the AR9. So, I decided to cut my losses and not spend more time driving to the post office and paying for shipment. Now it's a joy to shoot. After seeing slow motion videos of movement and getting two very unusual types of jams (porpoise where the nose would go really high upwards missing completely and getting stuck on the bolt AND a submarine jam where the round went under the bolt and slam into the feed ramp). A place to discuss variants of the AR series that are chambered for pistol cartridges… Apr 2, 2021 · Have a knowledgeable expert fix the chamber feed cone on the barrel, or purchase a barrel with a generous feed cone/ramp (go here for a barrel list). See here for details: 4-step guide to make (almost) any AR9 run 100% Posted by u/Memeoholicsanon - 9 votes and 22 comments With the new lower I can feed everything, even 147gr TMJ and JHP like federal HSTs. Reliable feeding is one of the big issues that many AR9's have, and it's usually related to the size and shape of the feed cone that leads into the chamber. I've got two Colt magazine adapted lowers that will not feed correctly but my Glock lower has no problem. I actually have a spike tactical colt lower and i did order the CMMG upgrade part kits and also mod the feed ramp. Through my experience having a decent amount of oil around your bolt carrier group is good, but I've never had issues if it's not excessively wet. FM uses a pretty standard feed cone in their barrels. 600 inches long and weighs more than 5. Due to the lack of a traditional feed ramp glock mag based Ar9"s can have issues feeding hollow points. Pretty sure aero hasnt done jack to fix the feed cone on the barrel. Hey all, needing some help from those more experienced than I. I have tried the brands, weights and type of bullets that matter to me. That barrel's feed cone is a pretty typical narrow 1980's style feed cone. Failure to feed if I don't cram magazines up into and hold them into the mag-well while firing. Three different magazine brands from KCI, SGM and Glock all have the same issue. If you would spend $20 on the Tapcom feed ramp then you can try it yourself. 200” or more. Using sgm tactical, oem Glock 19 and ets mags Does have a high cycle rate and goes through about 6 rounds before having a feeding issue. Macon has a improved feed cone and the other 2 have feed ramps. 4 oz buffer and different combinations. The bolt not pushing up into battery sounds like its getting tapped lighter than it should. I bought a complete EPC-9 upper. Jan 16, 2022 · I finally found the solution for Glock mag AR9 to feeding all HP rounds. No issues at all. Good luck! Sounds like a fun little gun, but yeah, it’ll need some serious tuning if your main intent is to trust it with your life. Mags only drop free half of the time and they over insert. Mar 3, 2017 · I built a 9mm AR to use with an echo trigger lower using the following components: Faxon 4. I would have to really jam it in there. Sights. I want to use the Colt magazine lowers because they are SBRed while the Glock lower is a pistol. Very common problem. Newly installed Macon Armory 6. A place to discuss variants of the AR series that are chambered for pistol cartridges, including 9mm, 45ACP, and 22LR. Same issues when I went to shoot again. Issue pertained to every JHP ammo I tried. Description. Not a big deal, just wondering how to diagnose it. FAQ Build styles generally are based on the type of magazine that will be used, and are usually not compatible. After i liked the experience trying out a psa ar15 pistol i went to try out the ar9 platform from them. I put a Taccom barrel and bolt in it and took it out yesterday to test. Use caution not to take too much off if you choose to attempt this modification because it could remove the capability of the magazine to retain the rounds and they may just pop out of the magazine. Many thanks to u/mildblueberry and u/a_lone_gunman for help with the article and for permission to use their very good photos. I suspect this is a feed ramp issue, related to the hop a 9mm cartridge needs to make to feed into the chamber. They told me that people have reported having better luck with feeding. BA 5. 18 votes, 21 comments. , fail to feeds etc. Diagnose this feeding issue 10mm Ar15 So I took it out over the weekend and put about 310 rounds through it. I went RDB, so not as useful anymore in my case. Tampering with them may result in worse feeding than you started with. At first glance they do look like they are not fully in but if the bolt is closed you should be fine. Rudy from Macon recommended using a dead blow buffer with standard carbine spring. Top. The rounds coming from left side of the mag seem to chamber just fine. Almost feels like my barrel is a fluke, its that good. Nov 14, 2016 · The opinions expressed on TGO are those of their authors and do not necessarily reflect those of the site's owners or staff. Sure, purpose-built PCC platforms have been excellent for reliability, the PCC genre suffers from the adaptation to the AR-15 and its fusion with other platform’s components such as Glock. I was going to send my barrel to taccom armory to get the same thing done, but I’ve been following this guy for a while on ig, and liked his work so, I went with him. Cartridge base may be catching on sharp edges on bolt face. Jun 27, 2020 · Hi All, I've got a PSA 8" 9mm upper on a PSA Glock mag lower. Apr 25, 2022 · Just to note im not new to firearms, or the ar platform. Odinworks 10. 160 rounds of hollow point/defensive style ammo (Winchester Silvertip, ARX Interceptor, Phoenix MS) and 150 rounds of FMJ (Remington UMC and Venom). This is not empirical evidence for the record. All his barrels have a feed cone that uses this same concept. Potential for out-of-battery detonation of the cartridge if the bolt stops short of fully chambering the cartridge. 100% feed of first 300 rounds running the upper on the first build's lower, but I just got a Spikes Glock lower for the build. Not as dramatic as a macon feed cone, but it looks way better than the standard one. The Hammer is profiled for 9mm/glocks cut bolts? wondering if there could be some drag. After discussing with you all on here for a bit, I contacted Rudy at Macon Armory at the recommendation of people here. I've had a PSA AR9 lower since it was released and mine took some fine tuning; I have a custom built upper though. His enhanced feed cone is usually able to compensate for pretty dramatic variations in mag height and presentation angle. If FMJ doesn't feed well, usually it's a mag height issue. It wouldn’t feed hollow point or flat nose, though. I don’t the EndoMag was available at the time. Now it eats FMJs just fine. This is exactly what you need to do! There is a diy on this on YouTube as well, and Rudy, at Macon Armory, has perfected this. Usually every 10 rounds of so I'll get a FTF where the bolt basically just pinches the round either at the bottom of the barrel or it will not seat all the way. You especially need this if you are using Glock mags. When I run the 19 round 19x mags, the pistol works flawlessly. Although, I may be considering a 45 or 40 build and it might be useful there as well. is it a failure to feed or just not seating all the way. and it seems it needs a guide to help the round feed up. Rise armament ar9 drop in trigger Share Sort by: Best. Sep 10, 2018 · Granted the gun has never not chambered a round, not once, but I figured if the 360* chamfer around the chamber hole worked, a feed ramp would make it better ! This kind of stems from the TF +10 base pad not working worth a f**k, so I thought this may help, not to mention it makes sense. May 4, 2022 · A lot of AR-9's use ancient feed cone geometry and often get rounds hitting the extension and not chambering. Causes excessive hammer pin stress/breakage. Firing 115 FED brass. I would not recommend an ar9 for home defense tho simply due to blown back/feeding issues that they all seem to have. I moved on to dedicated lowers. Small groupings out to 50 yards with irons. com (TGO) is not a lobbying organization and has no affiliation with any lobbying organizations. Mag or round makes no difference as I’ve tried several different brands of both. The first mag or 2 I had problems with even FMJ. The gun outshoots my friend's MPX and P90. I also mod the CMMG BCG to have a better ejection with the spike tactical ar9 upper receiver. May 29, 2019 · This is not a major problem as many 9 mm AR’s do not even feature a LRBHO. This is because I do not trust the gun to safely feed and fire HP ammo. This level of flexibility is one of the great things about AR platforms. It’s also really common on AR9s because for some dumb reason half the manufacturers out there don’t bother giving the barrel a feed ramp. Beyond that, some guns like 1911-style pistols have both a feed ramp and throat which are made to be at angles that are integral to reliable feeding. Original full 30 rounds in mag - dropping the bolt or hand charging, and, after getting no more that 3 rounds through It - I'm getting the pic. The TACCOM feed ramp is designed to be used with ‘GLOCK’ Magazine lowers and Standard AR15 uppers, without the use of the BHO feature in either the upper or lower, where the gap between the back of the barrel and front of the magazine is . A few hundredths of a millimeter worth of cerakote can absolutely mess with the operation of an action that was designed to operate within tolerances of only thousandths of a millimeter. Thought it might be too tight so I bought an ar-15 and put that in. A lot of the rounds that do fail to feed into the barrel have a half moon scuff. 56 is actually a little less likely to over penetrate dry wall than 9mm but it isnt a huge difference. Im a bit off put Sep 4, 2022 · I do not recommend polishing or creating a ramp in these types of firearms. You've got a couple of choices You can try the Macon Armory mag catch for the EPC lower and see if that helps (if you have an EPC lower). 2 of them say they have enhanced, one says pencil profile the other says straight. May 21, 2022 · 2 If I load three or more round and hit the bolt release feeds find until the last round where only 2/9 times it will feed properly on the last round. But hopefully they can do this to all their 9mm barrels in stock and not when customer ask to have the issue resolved or atleast send one as soon as the customers barrel comes in. They're using a slightly improved feed cone, but it's not as aggressive as the Macon Armory, Aero, or Taccom barrels. This didn’t solve the issue, so I very slightly sanded the feed ramp on both uppers and buffed afterwards to ensure a smooth feed. Normally 9mm wants a heavy buffer. I got a 16"upper and a px9 lower from psa, im about to go fire it for the first time but i read of quite allot of issues with out of battery det. A place to discuss variants of the AR series that are chambered for pistol cartridges, including 9mm, 45ACP… Apr 24, 2019 · A few months ago was asking questions about an AR9, an outstanding NES'r let me try a couple of his, started picking up parts and finally got to trying mine out today. One was double feeding/failure to eject and the second was unintentional two round burst/full auto dumps. HSTs. Have a 5. Coincidentally, FM's video on preferred ammo includes HST, so I don't know what to say. Polish the feed ramp and ease the edge where it becomes the chamber. It is the Tapcom lower Glock 9mm feed ramp. but I always have it with me. I am running an Aero . Not bashing Aero I love thier product. Any tips would greatly appreciated. I’ve fired it with a full 24 round magazine without any issues, it held open on last round and did not interrupt feeding. I’m not sure if this transfers to the firearm world, but something to think about at least. Colt and Endomags provide a better ‘feed ramp’ for any 9mm round. Cheap easy fix. This CMMG AR-9 Feed Ramp for 9mm Mk 9 AR-15 Rifles works only with the CMMG Mk 9 dedicated 9mm lower. I finally got the chance to take my AR out today and fire its first shots. It like $75 or $85 for them rudy to do it. 3 7 out of 9 time when I load up a mag the last round will smash/jam. Best. My PSA AR9 did the same thing until it got a feed ramp. And I have seen lots of mixed messages on ANY style AR trigger works vs special 9mm AR triggers, I'm not sure what to think. Dollar for dollar, it's not a good value IMO if you compare it to the blowback AR9 right now. so others can view it and get help or confirm their similar issues. I have not seen any reports, good or bad, on how the WC feed cone performs. Generally, throwing parts at a problem without understanding it is a last resort and not advisable. My brother has a FM products 9mm Glock lower. In EDC's case, the solution was to trim down the Metalform magazine LRBHO tabs so that they did not push the LRBHO mechanism up with one round left in the mag. 20K subscribers in the AR9 community. Our very own guru "blowback9" has demonstrated this with lots of expense and personal testing. I posted about it, search and you'll see the thread. In the first video you can see the bullet clearly rides the lower feed ramp of the TacCom barrel then jams against the top of the Posted by u/Blowback9 - 3 votes and 1 comment I've got a Spikes lower with a PSA upper. I have a epc with random parts from online and it works great with stock Glock mags or Amend 2 Glock 17 mags. bolt comes about halfway forward (it started to feed the round) and that was Oct 4, 2016 · I had similar issues with my AR9 with numerous broken firing pins. Some have the Aero EPC enhanced feed cone, some do not. I think the problem is the ejector and that it's not flinging cases out of the gun. By the same token, an upper with feed ramps that are out of spec by 1/100 of a millimeter might be enough to cause feeding issues. Obsolete. I almost gave up on my first build until I sent him the barrel. My 1 data Point experience says it might not. It does take a little bit of break in which I did while my parts came in. If you have a regular buffer or spring if it a try. See here for pictures and details. Late as usual to the "game" and have an aero EPC-9 Gen 2 and totally have these feeding issues. As for my AR-9, I had some feeding issues. 4-step guide to make (almost) any AR9 run 100%. Let me know what information I can provide to help diagnose this. I use all ETS mags in 3 different AR9 builds. I was not aware of the issue with hollow points (and other bullets that do not have round noses) not feeding reliably. The trigger resets every time so I don't think it's the Geissele. However, when I use 24 or 33 round Glock mags I get multiple failure-to-feeds where the bcg strips the round into the face of the barrel. rryymec ziwrl dfhb qpacd umredqrw tcilsf orxxp ohayz dzv wlyg