I just got mine back from Bushmaster. I had a cycling problem and it had nothing to do with the mags. as they work in my other two bushmasters. I couldn't figure it out so I sent it back, and a week later I have it back. The repair order states that they had to realign and seal the gas block and they polished the feed ramps, and it test fired OK. So the next calm and half way warm day I'm going to test it out. Other than my problem with cycling I love mine and its very very accurate and I have all ready shot my first ever called in coyote with it. You will be happy with it and if you have problems don't waste time send it back. Bushmaster's customer service is great and the turn around time is quick. /ubbthreads/images/graemlins/ooo.gif