by Palmetto State Armory
PSA upper receiver with a 16 inch mid-length nitride barrel chambered in 5.56 NATO with 1:7 twist, M4 feed ramps, mid-length gas, and a .750" low-profile gas block. It features a PSA 13.5" Hex Full Picatinny M-LOK free float rail. Forged 7075-T6 A3 upper, hard coat anodized black for durability. Upper is made in the USA. Not included: bolt carrier group (BCG) or charging handle (CH).
Sponsored
Cash for Arms
Upgrading your build? Sell what you have.
Turn your old rifle or pistol into cash for your next build.
Get an OfferCurrent
$249.99
Lowest
$199.99
Highest
$249.99
Guide
A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
A neutral guide to component strategies for left-handed shooters, left-eye dominant right-handed shooters, and those managing eye/hand dominance mismatches. Covers ambi uppers, charging handles, gas system tuning, and real-world tradeoffs.
6 min read