Barrel: 4150V Chrome moly steel, 16" barrel length chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. The M4 profile barrel has a gas nitride finish for durabiltly, a .750" diameter low-profile gas block, PSA 13.5" Keymod Free Float Rail and an A2 flash hider.
Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feedramp cuts, these upper upper receivers are made for us right here in the USA.
Includes: Magpul MBUS Rear Sight - Black. The US made MBUS (Magpul® Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16 platform. Spring-loaded flip up action is easily activated from either side or by pressing the top. Impact resistant polymer construction provides light weight and resists operational abuse.
Bolt Carrier and Charging Handle are NOT included.