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. I dont have another LR-308 with which to compare my measurements so I dont know which dimensions are problematic. If the solution to the feed problem involves a modification to the upper or lower, I'll test the bolt catch and take another measurement as shown in figure 5. 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). Talyn said: Pmag VS Hexmag. Magpul Pmag Bolt Hold Open Problem - YouTube As soon as my wife lifts our household arms embargo, I will have one. Could i just have faulty mags? 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. Depth of the hole? Fig. That should tell you what's going on. Not a back-breaking amount, mind you, but not insignificant. 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. [ARCHIVED THREAD] - Bolt Catch issues w/ Pmags + few questions, https://www.triggershims.com/ar_15_shims.html. None of the 3 15/30 i have worked. 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 5. Like CPT stated, it's supposed to raise it some and technically it can only go so far before the BCR bottoms out. Scan this QR code to download the app now. If that's what the bolt catch is suppossed to look like then my mags are a lil out of spec when inserted into the lower. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Elite Aluminum Products although I dont know who made them. NEW PRICING: All products have been reduced 10%! Also, since the follower rides too high the pmags I used made a dent in the follower from the bolt. That should fix it. I get asked a lot why, in almost all of my reviews or videos, I use good old-fashioned U.S. GI steel magazines in lieu of Magpul PMAGs, a popular alternative that most shooters these days are familiar with. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. We STRONGLY encourage all users to ONLY run premium ammunition through their firearm at all times. My external measurement as shown in figure 11 is the top of lower receiver to top of magazine catch hole which is 0.692. Fix: Empty Pmag gen 3 doesn't catch/lock bolt - YouTube I picked up a SCAR 16s last week and put 50 rounds through it with no problems at all (using the FN mag). I dont know what the limit is before you earn the edit privileges. I have both just to keep ammo separated. Alex is a Senior Writer for The Firearm Blog and Director of TFBTV. They are not as likely to happen with premium ammo yet the chance is still there. Does your caliper also have a depth gauge that can get the internal depth to the mag catch as in figure 10? Suggestions? Could the magazine be too low? For a better experience, please enable JavaScript in your browser before proceeding. The plunger hole on this 80% lower was supposed to have already been finished. 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. 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). What changed? We are all guilty of doing this, in one way or another. *, MISC Training Course Announcements & AAR's, Former Vickers Shooting Method Regional Instructors, Pacific Northwest Training and Networking, All Other Longgun Parts, Accessories, & Magazines (EE), Handgun Parts, Accessories & Magazines (EE), If this is your first visit, be sure to Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. 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 plunger and compressed spring are 0.490. Also the follower rides the bolt catch up A LOT. New production Colt-pattern U.S. GI mags are four to five dollars cheaper than generation three PMAGs. Also check out this great, descriptive video as the Gen3 7.62x51 PMag followers have a slightly different contour which can catch the feed lips, and not rise high enough to engage the bolt catch properly on DPMS Gen 2 style bolt catch levers. AR10 bolt catch issues : r/AR10 Note here that this PMAG will not insert into this civilian version of the HK-416, due to the odd body geometry. (not my lower, but my exact problem!) i have a gen 3 pmag without the window and its kind of frustrating. Privacy Policy. Today I had some last shot hold open issues while using 20 round P-mags. This will severly damage your bolt group over time. 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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