Gemtech Gvac Complete Upper Reciver Group 223 Remington/556 Nato 16.1" Barrel 1:8 Twist Gemtech Etm Flash Hider Pinned L
Gemtech GVAC, Complete Upper Reciver Group, 223 Remington/556 NATO, 16.1" Barrel, 1:8 Twist, Gemtech ETM Flash Hider, Pinned Low Pro GVAC Gas Block, Mid Length Gas System, Anodized Finish, Black, MLOK...