Barrel: 16" barrel length Chambered in 5.56 NATO, with a 1: twist, M4 barrel extension, and a mid-length gas system. The A2 profile barrel is finished with Phosphate. Barrel is finished off with an .750" diameter low-profile gas block, B5 Systems slim M-Lok drop in hand guad 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.
 
Bolt Carrier Group: For AR15 and M16 rifles and carbines. Bolt is made of shot-peened, Mil-spec Carpenter 158® steel. Gas key is secured with grade 8 fasteners and staked. Includes Charging Handle.
 
Includes: Magpul® MBUS Sight Set, Black