© Palmetto State ArmoryPSA 7" Nitride 5.56 1/7 6" Lightweight M-Lok Upper - With BCG & Charging Handle - 5165447572
- Brand
- Palmetto State Armory
- Caliber
- 5.56x45mm
- Category
- Gun Parts
- Platform
- AR-15
- Barrel Length
- 7in
- Gun Part Type
- Upper Receiver
- UPC
- 5165447572
Overview
This PSA 7" Upper is chambered in 5.56 NATO with a 1:7" twist and features a 4150V chrome moly vanadium steel barrel with a nitride finish. It utilizes a pistol-length gas system, a low-profile gas block, and an A2 flash hider, all enclosed within a 6" lightweight PSA M-Lok rail. The upper receiver is a forged 7075-T6 A3 unit with a hard-coat anodized black finish. Included is a full-auto profile bolt carrier group featuring a Mil-spec Carpenter No. 158 steel bolt that has been shot-peened, high-pressure tested, and magnetic particle inspected. The 8620 steel carrier is chrome-lined and phosphate-coated. The gas key is hardened to USGI specifications, secured with Grade 8 screws, and staked per Mil-Spec.
Price & Stock History
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