PSA 16" Classic M4 Freedom Upper with BCG and Charging Handle

#html-body [data-pb-style=XQHCA8E]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll;border-style:none;border-width:1px;border-radius:0;margin:0 0 10px;padding:10px}#html-body [data-pb-style=HAB18WP]{border-style:none;border-width:1px;border-radius:0;margin:0;padding:0}Barrel: 4150V Chrome Moly Vanadium steel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine length gas system. This M4 profile barrel is finished off with a standard handguard, F-Marked gas sight base, and an A2 flash hider.Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. 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.