Operate situation: On the 3rd round I get a light hammer strike. I have tried both H2 and H3 buffer weights. H2 I had been only finding just one shot, H3 I now get two shots off. I've tried this on two uppers, just one carbine and just one pistol, https://eduardoeiaum.blogaritma.com/34881181/rare-breed-frt-trigger-no-further-a-mystery