bigbob76
01-09-09, 20:07
Does anybody know if the Olympic Arms AR pistol upper (the one with a gas piston operating system and no rear recoil assembly) is interchangeable on different pistol lowers or do you have to use their lower receiver. I already have a pistol lower and I'm getting ready to post a "want to buy" so I need to know what all is possible. Thanks, Bob.