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About this part
The PSA 10.5" 5.56 NATO 1/7 Nitride 9" M-LOK Freedom Upper - With BCG & CH - 5165447625 is a 10.5" 5.56 / .223 upper receiver. One store lists it, Palmetto State Armory at $319.99.
Barrel: 10.5" Chrome Moly vanadium steel, melonite treated for durability and chambered in 5.56 NATO with a 1 in 7" twist rate. Carbine length gas barrel is finished off with a PSA 9" M-Lok Rail, a low profile gas block and an A2 Flash hider. Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer. Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, and chrome lined inside.