PSA 16" Carbine-Length 5.56 NATO 1/7 Nitride 13.5" Lightweight Hex M-Lok MOE Rifle Kit w/MBUS Sight Set

Barrel: 16"4150 Chrome-Moly Vanadium barrel, chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine length gas system. The barrel is finished with a .750" diameter low-profile gas block, PSA 13.5" Hex Full Picatinny M-Lok Free Float Rail and an A2 flash hider.Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feed ramp cuts, these upper receivers are made for us right here in the USA.Bolt Carrier Group: For AR15 and M16 rifles and carbines. The bolt is made of shot-peened, Mil-spec Carpenter 158A(R) steel. The gas key is secured with grade 8 fasteners and staked. The Bolt carrier is 8620 Steel. Includes Charging Handle.Lower Build Kit: PSA MOE Lower Build Kit, BlackIncludes: Magpul MBUS Sight Set, Black