DontCome2MyHouse
02-18-13, 16:55
I've been having an issue where ONLY on a 20RD PMAG the bolt on my AR will not lock back after firing the last round. 30RD PMAGs work completely fine. I'm stumped. I do know the follower design b/t the 20RD and 30RD are different. I shot using an older 20RD mag and a brand-new out-of-the-box mag with the same results.
I did an experiment today. I took the follower out of a 30RD PMAG and put it into the 20RD body and it worked flawlessly. I did another test where I used a 30RD mag spring in conjunction with a 20RD follower and body...worked perfectly as well. I also test a 10RD USGI mag w/ Magpul follower and a Troy Battlemag (non-Magpul follower) and they worked fine as well.
In conclusion, the only way I can get the bolt to lock back after the last round while using a 20RD PMAG is to:
A) use a 30RD PMAG follower
B) use a 30RD mag spring w/ 20RD follower (can only load it to 19 rounds due to the longer spring, but no big deal).
Can anyone tell me what the hell is going on here?:confused: I like to use the 20 rounders for range work shooting off a bag. Through some research I have found you can NOT purchase PMAG followers, only Magpul USGI followers.
Also, is there anything wrong with using a 30RD follower inside a 20RD mag body? Seems to fit fine. I do know a 20RD follower will NOT work inside a 30RD mag body b/c the follower will not travel all the way up the mag.
I did an experiment today. I took the follower out of a 30RD PMAG and put it into the 20RD body and it worked flawlessly. I did another test where I used a 30RD mag spring in conjunction with a 20RD follower and body...worked perfectly as well. I also test a 10RD USGI mag w/ Magpul follower and a Troy Battlemag (non-Magpul follower) and they worked fine as well.
In conclusion, the only way I can get the bolt to lock back after the last round while using a 20RD PMAG is to:
A) use a 30RD PMAG follower
B) use a 30RD mag spring w/ 20RD follower (can only load it to 19 rounds due to the longer spring, but no big deal).
Can anyone tell me what the hell is going on here?:confused: I like to use the 20 rounders for range work shooting off a bag. Through some research I have found you can NOT purchase PMAG followers, only Magpul USGI followers.
Also, is there anything wrong with using a 30RD follower inside a 20RD mag body? Seems to fit fine. I do know a 20RD follower will NOT work inside a 30RD mag body b/c the follower will not travel all the way up the mag.