I measured the receiver extension it is 7 1/4”, that of a DPMS style utilizing a 2 1/2” buffer , an Armalite extension is 7 7/8” which would utilize the 3 1/4 “ buffer correct? I ran about 80 rounds thru it was the first time I was ever able to get it to run! It actually grouped 1/2” -3/4” shots at 100 yards, Previous attempts I couldn’t hit a 12”x12” target at 25 yards !!! With the same ammo. So I’m a bit confused as your telling me PSA put an Armalite buffer system in a Mil Spec type DPMS type set up ? I realize there is some proprietary features with the PSA set up any helpful input would be much appreciated. I pulled the rifle apart I know for a good cleaning and inspection afterwards and really didn’t see anything unusual as was not the situation running the stock set up !
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