PSA 16" Mid-length 5.56 NATO 1:7 Stainless 13.5" M-lok Lightweight Upper – With BCG & CH – 5165448205

Barrel: 416R Stainless Steel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a mid-length gas system. Barrel is finished off with a .750" diameter low-profile gas block, PSA 13.5" Lightweight M-lok free float rail, and 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 158A(R) steel. Gas key is secured with grade 8 fasteners and staked. Bolt carrier is parkerized outside and chrome lined inside. Includes Charging Handle.