PSA 7.5" Pistol-length 300AAC 1/8 Phosphate 6" Lightweight M-LOK Railed Upper With Romeo 5, BCG, & CH

Palmetto State Armory

Overview

The PSA 7.5" Pistol-length 300AAC upper receiver is a complete assembly designed for the AR-15 platform, featuring a 7.5-inch barrel optimized for the 300 Blackout caliber. With a pistol-length gas system and a twist rate of 1:8, this upper provides reliable cycling and stability for subsonic and supersonic ammunition. This configuration is commonly used in builds focused on compactness and maneuverability, making it ideal for close-quarter engagements or home defense setups.