I recently acqired a AR15 pistol on a trade. Its a palmetto state multi cal lower. The upper was "presented" as a PSA upper. But it is not marked. I recently was looking at the 10.5" barrel and noticed there wasnt any marking identifying caliber. Is there any way i can tell if its a 5.56...
Hey guys and gals. Obviously new to this site, never been on a online forum. I am from central indy, and obviously LOOOOOVE guns!!!!!! I enjoy all types of firearms, but consider myself a AKaholic. Love my Kalashnikovs (variants.) I hope to learn a lot here, and maybe give a lil bit of...