BCM 11.5 plus M4 2000 problem
Recently I purchased a BCM 11.5 BFH upper, loved it, and decided to go ahead and installed a mount for my M4 2000. I tried it out tonight and it would fire one round, chamber a live round, and fail to fire.
I'm also running a H3 buffer. Any suggestions?
11.5 BCM, and Giessele SD-E
No problems here, AAC SPR-M4 on the 11.5, and it did take awhile to stop the bump firing LOL.
Spikes H3 and Tubb flatspring, BCM FA carrier running better than the original Colt FWIW. Was eating firing pin retaining pins...
Makes me think the barrels are a little over gassed, mine has a logged 3,470 rounds through it now.