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About this part
The PSA 7.5" Phosphate 5.56 1/7 7" M-LOK Upper - With BCG & Charging Handle - 5165447905 is a 7.5" 5.56 / .223 upper receiver. One store lists it, Palmetto State Armory at $249.99.
Barrel: 7.5" 4150V Chrome Moly vanadium steel, phosphate treated for durability and chambered in 5.56 NATO with a 1 in 7" twist. Pistol-length gas barrel is finished off with a PSA 7" 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. Featuring a mil-spec finish, 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.