Well its a spikes upper and BCG w/MP test chromed bolt. The barrel is a Rainer Arms 10.5" ultra match, w/ Rainer gas block. Barrel is torque to spec and the gas block and tube are lined up. I was shooting Rem UMC 55 gr. and had 5 FTF and multiple Bolt not holding open on empty mag. Plus two cases where the next round in mag didnt get picked up and chambered. All this happened with in 100 rounds on my first day at the range.
I was thinking of switching to an H buffer to reduce the weight being applied against the BCG. Let me know what you guys are thinking and I'll post some pics in Spikes pic thread. Thanks Guys!