Functionality situation:  Within the 3rd spherical I get a light-weight hammer strike.  I've tried out equally H2 and H3 buffer weights.  H2 I had been only receiving 1 shot, H3 I now get two shots off.  I've tried this on two uppers, just one carbine and a person pistol, but utilizing the exact same BCG.  I requested an aimsurplus NiB BCG, I'