Machined, 7075, T6 aluminum, Upper Receiver, with a 5" long, flattop rail, accepts Weaver-style rings and your tactical accessories.
Finished with mil-spec, hard-coat, black anodizing for protection from scratches, mars, and abrasion, .250" (6.3mm) diameter pivot pin.
This M4 model has the feed ramp cuts in it.
Impact Guns is the gun shop for all your shooting needs. We offer a wide selection of firearms, including: handguns, shotguns, rifles, ammunition, rifle scopes and optics, as well as collectible machine guns and other NFA/Class 3 guns. Impact also services the needs of law enforcement and military with our wide variety of tactical weapons and accessories. Shop online through our 256-bit Secure Sockets Layer encrypted online gun store 24 hours a day!