pmag bolt catch problem

Sorry, I see the bolt is hitting the follower i could not see that at first.. Not sure if I understand the problem correctly, but I thought the bolt catch is SUPPOSED to ride up on the follower? I read through the threads dealing with this issue. UPDATE: After seeing these pictures, I checked my factory mag. If the solution to the feed problem involves a modification to the upper or lower, Ill test the bolt catch and take another measurement as shown in figure 6 (not figure 5). Again, kids running with scissors did this to us. You cannot paste images directly. I wish I could edit the original post to correct this. I ordered 10 mags from brownells after I saw they didn't ride the bolt up. I'm pretty sure it's in the 80% Section. I don't know if this is an indication of another problem being that the bolt catch is too far left. I'll have to get measurements later. Can anyone offer insight to the cause of or solution to these problems? For me it's almost all gen 2 P mags. 1.4k The Magpul PMAG is a great, well designed magazine that many people like and use in various rifles around the world, but over the years I have discovered that they are not the best option for me personally. I picked up a SCAR 16s last week and put 50 rounds through it with no problems at all (using the FN mag). If someone can answer that, I'd appreciate it. I dont have another LR-308 with which to compare my measurements so I dont know which dimensions are problematic. Pasted as rich text. If so, it might be worth trying another batch of pmags in case it's just a mold variation. Yes I had to trim the left side rear notch square before the BC laid perfectly flat. I deepened the hole to 0.480. Could i just have faulty mags? Using PMAGs can actually do irreparable damage to an FN SCAR rifle. Mag still wobbles the same and the error still remains. The bolt catch rides up but not on the black polymer part of the mag, but the follower. check out the. Elite Aluminum Products although I dont know who made them. i have my pmags and i am just noticing a problemtried it out on 3 seperate lowers all of them have the same problem: http://img.photobucket.com/albums/v488/derek45/AR/IMGP5612.jpg, the tip of the bolt catch that is supposed to be actuated by the back end of the magazine follower is missing the follower and end up not catching the bolt once the mag is empty. It was initially 0.323 deep. Try tightening the mag catch an extra turn. Then collapse that spring ON the plunger, to coil bind, and measure the OAL of both (with spring in coil bind). For a better experience, please enable JavaScript in your browser before proceeding. Operation of an AR-15 without the receivers / action fully closed may result in serious injuries or death. The cause could be one of the following: Bolt catch assembly is too far away from the back of magazine well Finger on bolt catch is too short Slight slop (looseness) on magazine, or magazine faceplate The Fora platform includes forum software by XenForo. It's a whole lot of details. Its best to identify these two common issues with your rifle, before attempting to diagnose problems with your magazines. What measurements do you have on your lower? My external measurement as shown in figure 11 is the top of lower receiver to top of magazine catch hole which is 0.692. At the moment just keep posting as usual, the edit feature will become available. Insert the steel DPMS mag and lock the bolt back and look through the ejection port and note how much of the bolt face the bolt catch covers. The Fix: 1.) A forum community dedicated to FN Herstal firearm owners and enthusiasts. You can post now and register later. Measure the depth of the hole, first. Come join the discussion about optics, modifications, gunsmithing, styles, reviews, accessories, classifieds, and more! The plunger and compressed spring are 0.490. JavaScript is disabled. The P-mags always functioned. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. While the weight difference may not seem like much to a civilian shooter who packs up his shiny, clean competition rifle into his Pelican case and totes it to and from the range in the family truckster, you hear about things like guys cutting toothbrushes in half to save weight in the military. These same parts are available from other vendors. I've heard of Issues with Pmags and ARs due to Pmags having more material on the rear of the mag, creating more distance between the follower and the Bolt Catch tooth which isn't as far with USGI mags, and wondering if it is that, plus tolerance stacking being my Catch has so much wiggle room on the Standard M&P. Not a back-breaking amount, mind you, but not insignificant. and our Not trying to be a dick, but can you summarize in one sentence what the rifle is NOT doing? Note: Firearm will not retain magazines until a replacement magazine catch solution is re-installed. I personally dont see why I would spend an extra five bucks for magazines that wont drop free in all my guns, may or may not be compatible with new and upcoming guns, and my next point: wont fit in all my guns. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. I have a substantial cache of PMAGs, I already performed the PMAG mod by cutting the back of the mag so the bolt catch wont activate. Close the receivers back together and re-engage the rear takedown pin. The plunger hole on this 80% lower was supposed to have already been finished. https://www.cdnnsports.com/catalogsearch/result/?order=relevance&dir=desc&q=Sig+bolt+catch. The gun will feed rounds from the PMAGs no problem. Lastly, not only are PMAGs more expensive than the alternative, but also heavier. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. I'm sure someone here can find that thread on the mag catch heights. Posted July 20, 2016 in Shooting Accessories, TFBTV by Alex C. with 210 CommentsTags: I'm the guy at the store with 27 coupons, Magpul, pmag, PMAGs, Tightwad. All it takes is one out of spec cartridge that the extractor fails to grab leaving the cartridge behind in the chamber, going back then forward and pushing a fresh round against the cartridge left behind and you have the dreaded double feed where everything locks up. Excellent work with the pics and details. Also don't buy anything from Beavercreek Armory in Hillsboro, Oregon as they screwed me over with this poorly built, out of spec rifle. One new winner* is announced every week! Would anyone be willing to measure and report their heights from the top of the lower to the top of a cartridge case head? Clear editor. One new winner* is announced every week! Switch the Safety selector to 'Safe'. Just checked all of mine, I'm not sure how HC's ended up with a witness mark where it's at. I think I may just shoot it a few mags and see what happens.. I dont know what the limit is before you earn the edit privileges. Paste as plain text instead, : "Watch what people are cynical about, and one can often discover what they lack.". 7: Bolt catch fully extended, plunger removed = 0.443, Fig. I can manually push the bolt catch tab in to raise the catch higher. Try manually locking it back a dozen or so times then checking for any wear streaks on the top of the magazine feed lips. But with firearms, there really is seldom a one size fits all option for, well, anything. All Rights Reserved. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Here's a pic of the wear on the bolt catch caused by this: Here's the OEM mag (left) compared to the PMAG (right). Take off your upper receiver, throw in that empty mag. Copyright © 308AR.com 2023 The issue is with bolt lock back. All Rights Reserved. I read your post twice, I still don't see the malfunction. edit: i just got them. We STRONGLY encourage all users to always use the new PMAG magazine or some other 10 round magazine solution with a removable floor plate. I sanded the top rib along the back wall of the mag near the feed and the feed itself and problem seems to have resolved. It isnt that they are bad (in fact they feed and run very well in certain firearms) but in my years of shooting I have simply found that other products may better suit a myriad of shooters. UPDATE: after tinkering with it, Ive noticed it only happens on 30 round mags. [ARCHIVED THREAD] - Another P-Mag bolt catch issue. Re: Magpul PMag issues. You are using an out of date browser. Privacy Policy. Maybe it's raising it too much, but a locked bolt is a locked bolt. It may not display this or other websites correctly. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. This is not the case with PMAGs in many platforms. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Well, there are several reasons for this. [ARCHIVED THREAD] - Bolt Catch issues w/ Pmags + few questions, https://www.triggershims.com/ar_15_shims.html. It's not the bolt catch, itself, obviously. To my knowledge, no PMAGs will work in the FS-2000 to this day without modification. Depending on the rear takedown pin you are using either pull the pin (Tacticool pin) or actuate the pin to disengage the receivers (KingPin & Hyperswitch). Also, PMAGs had trouble fitting in firearms like the British SA-80/L-85, and will not fit in the FN FS-2000 without the user modifying the weapon by removing a component that serves to seal the weapon from dirt and debris. The plunger and compressed spring are 0.490. Think it could be magazine springs? Open the receivers to the maximum limit of the pin capabilities. Its Alex C. with TFBTV. Some people used a 9mm bolt catch, others shaved out the bolt catch area on the mag itself. I have both just to keep ammo separated. For a better experience, please enable JavaScript in your browser before proceeding. How is it though that my. The bolt catch on the AR platform is directly in the center of the mag, so the shape of the notch doesn't matter on the AR, but on the SCAR, the bolt catch is offset slightly to the left. This can cause partial engagement of the bolt catch and result in unintentional contact between the bolt carrier group and the bolt catch during normal weapon operation. Also, since the follower rides too high the pmags I used made a dent in the follower from the bolt. TNVC/NGI Giveaway: 15 winners with over $7000 worth of prizes!! Could use some advice, being this is a problem on MANY ARs, not just the M&P's. Definitely try another couple magazines, including one from another manufacturer. The plunger hole was too shallow but even after deepening it, the bolt catch still isn't pushedup high enough because the magazine follower is too low. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. This is not the case with PMAGs in many platforms. Similar occurences? Your link has been automatically embedded. PMAG Problems Centerfire Rifles - Semiautomatic or Gas Operated This will severly damage your bolt group over time. What the problem is: The lip on the un-fixed P-mag pushes the mag release/Bolt catch bar up just enough to catch the bolt group, but not enough to stop it. TSiWRX. The mags cause the bolt catch to rise ever so slightly and drag on the bolt lugs, which results in significant damage over time. The mag on the left is the metal 10 round mag, the two to the right are Pmags. Once bolt was locked to the rear or closed, it would engage the catch and seat properly on the "bad" mag. Magpul needs to tweak their mold a bit before they make the claims they do. For me I had to shave off small pieces of the mag to make the bolt catch itself latch. 11: Top of lower receiver to top of magazine catch hole = 0.692. The tension on the bolt catch by the BCG helps keep the bolt catch firmly engaged over the rear of the follower of the Pmag. Copyright 1996-2023 AR15.COM LLC. Always use the firearm and AR MAGLOCK products as designed, engineered and intended for use. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. The main concern is the failure to feed. This will allow for easy removal of the magazine . Continue until the upper lip is flush with the upper receiver when closed. The problem is interference between the bottom edge of the rear wall of the mag well and a ridge running horizontally across the PMag spine. His problem is that the front tab of the bolt catch is not engaging on the follower of the PMAG, so the bolt won't hold open on the last round. Next up is damage to the SCAR. 6: Bolt catch fully extended = 0.359, Fig. Seamac, did you have to modify the black polymer on the mag? When the PMAG 20LR is inserted into the magazine well, some MWS rifles exhibit interference between the bolt catch and the rear of the magazine. . We are all guilty of doing this, in one way or another. What changed? Because both symptoms exist, it seems that the components within each receiver may be too far from each other which leads me to suspect that the interface between the upper or lower is too thick. Note here that this PMAG will not insert into this civilian version of the HK-416, due to the odd body geometry. Seen here is a few examples of when a PMAG has to be manually removed: a problem that isn't present most of the time with plain old aluminum magazines. Just did this, no difference. NEVER use this product outside the standard method of operation as it will cause the rifle to no longer be in compliance and you risk arrest. None of the 3 15/30 i have worked. Really appreciate your thorough pictures provided, that's an excellent way to provide data on your issues. My solution is to raise the bottom rear edge of the mag well by approximately 1mm to 1.5mm. Why not just ditch the PMags? I used a digital caliper depth gauge as shown in the picture. .661 from top of receiver to top of mag catch inside magwell. Any use of this content without express written consent is prohibited. I realized you can fix this by filing or dremeling off some material on the rear of the mag body, or by using whatever generation of magazine they implemented to fix this, or you could just arrive at my next point and save four or five dollars more by purchasing a GI mag. A: Some states require the compliance solution be made permanent. Sounds like the pmag is riding a little high and rubbing the bottom of the carrier a bit. Mine seem to be fine after trimming of course. It was initially 0.323 deep. You must log in or register to reply here. I'll try and grab my camera. You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers. The bolt can still be removed by grinding but will no longer be usable. That should tell you what's going on. The witness make could be from the locking lugs on the bolt, mine don't have it so I can't say for sure. If you have something major to change a quick PM to a mod will get it fixed for ya. . Your enemies, with nodding of their plumes, fan you into despair! To clear, get the bolt to move back by removing the floor plate of the magazine, remove the spring and follower followed by the rounds in the magazine and the 2nd round should drop out. The bolt partially strips a round but doesnt chamber it and just drags over the top of it. Talyn said: Pmag VS Hexmag. NEW PRICING: All products have been reduced 10%! I had that issue with a couple Lancer mags, ended up replacing that bolt catch when it broke with a Sig 716 bolt catch and now the one Lancer mag I saved that had the issue works in that rifle. Yours is 0.6640" for a difference of 0.028" which isn't as much as I expected based on drawings which is 0.049". Also the follower rides the bolt catch up A LOT. It did. Using PMAGs can actually do irreparable damage to an FN SCAR rifle. As weird as this will sound, you need to measure the length of your recoil buffer, and the internal depth of your buffer tube and post it here in addition to the excellent info already provided. Let every feeble rumor shake your hearts! I sent an email toDaytona Tactical support telling that themagazine catch hole is0.049 too low compared to others I've seen drawings of and am awaiting their response. The bolt passes over the cartridge instead of stripping it from the magazine. A friend with a lower that started at 80% also had the same problem as I do and fixed his by shifting his mag catch up 0.050". Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Again, though, I would like to recognize that PMAGs are a quality product and Magpul is very receptive to user feedback. Checking mine now! Operation of any AR MAGLOCK products outside the standard method of operation or its original intended use may cause non-compliance to laws / regulations, and injury or death. Thanks for the reply. Replace the empty magazine with a new 10 round magazine and let it click into place. "And here remain with your uncertainty! The bolt catch problem can be solved by drilling the plunger hole deeper but I'd first like to solve the feed problem. No need to answer that last question. By What corresponding dimensions do you have? It was initially 0.323 deep. It may not display this or other websites correctly. 3: Magazine feed lips height = 0.446, Fig. If you could post a pic of that comparison, it would be helpful. Display as a link instead, Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Second Media Corp., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This solution will meet some states permanence requirements. Depth of the hole? Note the different rear opening. After installation of the ARMagLock the button is. When someone mentions must-have magazines for the AR platform, many shooters immediately think of Pmag Vs Hexmag. For a while you only had so long to make the edit and then never again. We STRONGLY encourage all users to ONLY run premium ammunition through their firearm at all times. After depletion of your 10 round magazine, you must hit the bolt catch release to bring the bolt 'home'. Coil bind on the spring? /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. I didn't include that aspectbecause the bolt easily clears the bolt catch (figure 4) so I didn't want to throw in a red herring andconfuse the issue. and might have several still in the packaging. I just don't know why my friend has witness marks on his pmags after use in my Scar 16s. I thought it was a nonissue with the gen 3. Mick 1 month later. Pmags have worked fine in the past. They are reliable, well-constructed, and produced by a company that has a great reputation. Hey, everyone. I will lock back, but requires a strong pull, instead of the gentle slide fully to the rear with aluminum or steel. Either the hole gets deeper, or a couple coils come off the spring, or the tail on the plunger gets shortened. So, for people who only have AR-15s and only shoot AR-15s, its easy to get tunnel vision and just assume that PMAGs are the greatest, and the end-all, be-all answer for all shooters, while overlooking the needs of other people. Repeat for the P-mags and note any difference. This is one of my pistols. Loctite (red) or epoxy the Allen bolt into the standoff (threaded barrel tube), and lightly drilling the bolt head facets with a 1/8 drill bit until the socket teeth are rounded. They are not as likely to happen with premium ammo yet the chance is still there. NEVER attempt to cycle the bolt carrier group (manually or otherwise) or fire a round with the action open (receivers separated), as this may cause serious injury or death AND potentially make your rifle non-compliant with laws and regulations! Scan this QR code to download the app now. How do I make the install permanent for use in states such as. AR platform is new to me, and I hope I don't upset anyone here because I am a noob when it comes to ARs. I included a pic of the mag fully inserted, then a mag with the follower pushed down to the point of where the bolt catch stays flat. Like CPT stated, it's supposed to raise it some and technically it can only go so far before the BCR bottoms out. In total, I (and friends) fired about 1,200 rounds in this review, 1,000 PMC .223 55-grain, about 200 reloads (a mix of 77- and 75-grain), and 20 rounds of Tula steel case at the very end. I actually just noticed this issue on my Colt 6920 with Magpul M2 PMAGS. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. I have about 15 Amend 2 mags, but that's out of 20 because 5 of them wouldn't drop out of the mag well by themselves. Indeed, if could be too low, and we have a HELL of a thread here on that very issue. I'd like to get measurements with lowers that did not start as an 80% because there have been reports of80% lowers having the same problem as mine. I deepened the hole to 0.480. It's brand new so it couldn't be anything crazy like the gas block. The problem is pretty simple, the magazine's follower is failing to raise the bolt catch. New production Colt-pattern U.S. GI mags are four to five dollars cheaper than generation three PMAGs. Correction to original post: If the solution to the feed problem involves a modification to the upper or lower, Ill test the bolt catch and take another measurement as shown in figure 6 (not figure 5). 80% ar-10 bolt jammed m5e1 pmag stuck 1 2 Next Mk3Mstr6Mchne0 Atlington, Washington Messages 12 Reactions 28 Apr 30, 2019 #1 this is kind of hard to explain, I am also pretty experienced with the AR platform, my M5e1 upper is assembled on an 80% lower. 11: Top of lower receiver to top of magazine release hole = 0.692. Problem: 30 round Pmag follower doesn't catch on the front lip of the bolt catch. i have a gen 3 pmag without the window and its kind of frustrating. The ones I used were my friends and I checked the bolt catch before I shot. View attachment 25288. Suggestions? I started construction with the lower at 80%. Ok, so I have searched the hide and my googlefu is actin a fool like my pmags You must log in or register to reply here. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Also, we'll be happy to correct or delete anything if you point it out to us in the meantime. Additionally, unsafe and unintended methods of operation of the FIREARM may also cause non-compliance. Please refer to our installation videos and the instructions on your packaging. However, when using the CH to keep the BCG to the rear, the follower can slip past the bolt catch when slammed into the magwell or when jarred or shaken significantly after insertion. https://www.luth-ar.com/product/buffer-tube-spring-assembly-kit-308/, Bolt catch is from a TacFire .308 AR Lower Parts Kit (not for an AR-15).

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