6th post down.
http://forum.lwrci.com/viewtopic.php...14145&start=75
You may also want to read the entire thread. It's not flattering. It's also hilarious (and frustrating) how quickly the fanboys are to rationalize away the problem. "Oh yeah, it's probably just the magazines ha ha ha! We don't know yet what the real problem is ha ha ha! I've shot 300 rounds through my gun with 5 magazines it's ok ha ha ha!" No, the problem is obvious: the IC bolt catch is too small, and if PMAG M3s were truly the culprit, they would cause the same issues in other "mil-spec" lower receivers as well. They don't. The issue isn't even close to prevalent in BCM and Colt lowers, as well as a friend's DD I tried. To make matters worse, LWRC was 15+ months late on delivering the IC, it shipped with this problem, and they STILL haven't fixed it. How did this problem make it through their grossly-tardy design process, and how hasn't it been fixed yet?
When 2/3 of my LWRC rifles had problems that LWRC couldn't or refused to fix (but had an obvious solution staring them right in the face), you're damned right our complaints are justified. I used to defend LWRC a lot on this site (read past posts if you don't believe me), not because I was a fanboy, but because a lot of people bashed them without having firsthand experience. Well, I have the firsthand experience. Their quality is questionable at best, and I refuse to risk my life on guns like this. If you choose to stick your head in the sand, that's fine, and I wish you the best, but until you have 3,000+ rounds through the gun and have run it through a few carbine courses, it's hard for us who have to take your word seriously.
P.S.: to be fair, the AXTS AX556 also displayed the problem, though the bolt catch still engaged regardless. That said, the bolt catch on the AXTS was also noticeably smaller than mil-spec, and I don't consider it a mil-spec platform to begin with (because it's most definitely not). It's a boutique lower that deviates greatly from the norm. In the end, the M6IC was the only lower that would not engage the follower and would fail to lock back if the right circumstances were present. It's a bad design that LWRC is sweeping under the rug, just like Glock and their post-2010 extraction problems. Like the Glocks, it also looks like fanboys are willing to rationalize the problem away to weirdly and blindly defend their chosen gun.