FN FN 15 Military Collector 20" Upper 5.56x45mm 1:7 Picatinny Quad Rail Rifle-Length, Black

Own a true piece of firearm history from the makers of the world's most battle-proven firearms. The FN 15 Military Collector Series M16 upper receiver assembly is an authentic reproduction of the legendary rifle, built to FN's and the U.S. military's exacting specifications. Featuring a 20 inches, 1:7 right-handed, button-broached barrel, this upper is chrome-lined and chambered in 5.56 x 45mm for exceptional durability and reliability. It comes equipped with a complete M16-style MIL-SPEC bolt carrier group, including a high-pressure tested and magnetic particle inspected bolt crafted from Carpenter 158 steel. Completing this faithful reproduction is a Knight's Armament M5RAS quad-rail with adapter covers, delivering an iconic look and unmatched functionality. Whether restoring a classic or building a precision M16-style rifle, this upper receiver assembly is the ultimate choice for collectors and enthusiasts alike. The Knights Armament M5 RAS adapter rail provides secure mounting with adapter covers included A 20 inches button-broached, chrome-lined barrel with an A2-style compensator ensures durability, improved barrel life and recoil reduction An M16 style Mil-Spec Bolt Carrier Group features an HPT/MPI tested bolt made from carpenter 158 steel for exceptional durability The Matech rear sight is engineered for precision, offering quick and accurate targeting with its adjustable features to suit a variety of shooting scenarios