PSA 8.5" Pistol-length 5.56 NATO 1/7 Nitride 7" Lightweight M-LOK Upper with BCG & CH - 5165450466
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Palmetto State Armory
Overview
The PSA 8.5" Pistol-length Upper Receiver is a complete assembly designed for the AR-15 platform, featuring an 8.5-inch barrel chambered in 5.56 NATO with a 1:7 twist rate. This upper utilizes a pistol gas system, which helps ensure reliable cycling in shorter barrel configurations while providing optimal performance for a variety of ammunition types. This upper is commonly found in compact builds aimed at maximizing maneuverability and versatility, making it a solid choice for close-quarters applications.
Specifications
PSA 8.5" Pistol-length 5.56 NATO 1/7 Nitride 7" Lightweight M-LOK Upper with BCG & CH - 5165450466
September 2026 on GunPartPicker
PSA 8.5" Pistol-length 5.56 NATO 1/7 Nitride 7" Lightweight M-LOK Upper with BCG & CH - 5165450466 ranked #267 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #620 of the 1,654 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today the one retailer we track has it in stock. Prices barely moved in September 2026, holding around $319.99, so there haven't been real sales lately. Buying today, the lowest price is $319.99 at Palmetto State Armory, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
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Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
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