Palmetto State Armory

Overview

The PSA 8.5" Pistol-length 5.56 NATO Upper Receiver is a complete assembly designed for AR-15 builds, featuring an 8.5-inch barrel with a 1:7 twist rate that stabilizes a variety of bullet weights for improved accuracy. Its pistol gas system length enhances reliability and reduces recoil, making it suitable for compact setups. This upper is commonly used in short-barreled rifle (SBR) or pistol builds aimed at maneuverability and versatility.