The basis for any top quality Bushmaster Rifle - designed for the "do-it-yourselfer". FFL required for purchase. Manufactured to latest Military Specifications for the M16 A2 rifle/carbine: Precision machined high tensile strength 7075 T6 Aluminum Alloy Forging - not a casting. Exterior is grit blasted to produce a non-reflective matte finish. Protective finish: Hard Anodize Military A8625, Type III, Class II finish - lusterless (flat, Approximate Black No. 37038 Table IX - with a Nickel Acetate final seal coat. Latest M16 A2 design reinforcement area around front pivot pin and reinforcing ridge over buttstock attachment area Full "fence" around mag release button protects from accidental release Bushmaster Mil. Spec. Lower Receivers are guaranteed for fit and function - and this guarantees the interchangeability designed into the weapons system if you ever buy a 2nd upper/barrel assembly. Standard military push pin design with captivated pins front and rear.
