Yep,.....here's another one. Decided to try out a piston upper. I have an Adams Arms Tactical Elite on the way! Adam Arms 14.5" midlength Tactical Elite upper 14.5 Melonited barrels M4 ramps Chambered in 5.56 NATO 1:7 mid length 12" quad rail Surefire adapter Wanna kill these ads? We can help!