Palmetto State Armory (PSA) 10.5" 5.56 NATO Upper Receiver Assembly (1:7 Twist)
This Palmetto State Armory (PSA) AR-15 upper receiver assembly is built around a 10.5" 5.56mm NATO barrel with a 1:7 twist rate. It features a flat-top upper with Picatinny rail, forward assist, and ejection port cover.
Configured in a classic FSB setup, this upper includes an A2-style front sight base with standard two-piece polymer handguards and an A2-style flash hider.




