PSA 8.5" Pistol-length 300AAC Blackout Nitride 7" Lightweight M-Lok Upper With BCG & CH - 5165449777

Overview

The Palmetto State Armory 8.5-inch AR-15 upper receiver is chambered in .300 AAC Blackout and includes a bolt carrier group and charging handle. It features an 8.5-inch nitride-treated barrel with a 1:7 twist rate, a pistol-length gas system, a .750-inch low-profile gas block, an A2 flash hider, and a PSA 7-inch lightweight M-LOK handguard. The upper receiver is forged from 7075-T6 aluminum with a hardcoat black anodized finish. The bolt is constructed from shot-peened Carpenter 158 steel with a parkerized exterior and chrome-lined interior, paired with a gas key secured by grade 8 fasteners and staked to Mil-Spec standards.

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