Operate situation:  About the 3rd round I get a lightweight hammer strike.  I have experimented with the two H2 and H3 buffer weights.  H2 I was only getting a person shot, H3 I now get two photographs off.  I've attempted this on two uppers, a single carbine and 1 pistol, but utilizing the similar BCG.  I requested an aimsurplus NiB BCG, I am