“Works awesome! Have two of these. One in a 9mm AR SBR. The other in a 10.5" select-fire 9mm AR. Runs great in full-auto, zero problem crankiing along at 800 rds per minute. Works fine with virtually any buffer I try, only big difference is the rate of fire. Use an "H2" buffer on the sub-gun, an "H" buffer on the SBR. Both work great with zero issues.”
“Put this in a new Spikes 9mm upper and lower with spikes buffer system. A 16" Ballistic Advantage barrel and a cheap charging handle. Working very well.”
