Has anyone used the A5 system with a 300BLK upper? Just wondering as my SBR lower currently has the A5 buffer system on it. Thanks.
Shot my 8" Noveske 300BLK upper tonight with standard A5 buffer. Also tried the next weight up A5 buffer. both ran 100%. Even subsonic non suppressed cycled perfect. Locked bolt back on every last round. Also tried my custom A5 buffer with weights replaced with tungsten powder stolen from 2 ST-T2 buffers. It was smoother than the others as confirmed by my friend, my dad and I.
I also tried my LMT enhanced BCG it ran 100% also. The two combined shot the smoothest with less muzzle rise. It looks like 300BLK is not as finicky as people say.