GM Pistol Kits

AR-15 KITS

Gorilla Machining Complete 5.56 upper receivers are available in 7.5" and 10.5" for your pistol upper and 16" for rifle uppers. AR 15 5.56 upper are available in black anodized finish along with FDE, OD green, burnt bronze, blue titanium and tungsten gray in cerakote finish . That means finding the right 5.56 uppers for you has never been easier. Look no further and get your hands on our extensive selection of 5.56 upper receivers. We look forward to providing our American homeland with top tactical accessories .