PSA 20" Rifle-Length 5.56 NATO 1/7 Stainless Steel 15" Lightweight M-LOK Upper With BCG & Charging Handle
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Palmetto State Armory
Overview
The PSA 20" Rifle-Length 5.56 NATO Upper Receiver is a complete assembly designed for the AR-15 platform, featuring a 20-inch barrel with a 1:7 twist rate, which is ideal for stabilizing a variety of bullet weights for enhanced accuracy. The rifle-length gas system ensures reliable cycling and reduced recoil, making it suitable for both precision shooting and sustained fire. This upper is commonly used in builds that prioritize the 5.56 NATO caliber and benefit from the longer gas system for optimal performance.
Specifications
PSA 20" Rifle-Length 5.56 NATO 1/7 Stainless Steel 15" Lightweight M-LOK Upper With BCG & Charging Handle
September 2026 on GunPartPicker
PSA 20" Rifle-Length 5.56 NATO 1/7 Stainless Steel 15" Lightweight M-LOK Upper With BCG & Charging Handle 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 February 2026. All time, it ranks #230 of the 1,656 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on rifle-length gas, and nearly all AR-15.
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. The best price drifted down from $359.99 to $319.99 over September 2026 without a real sale. Buying today, the lowest price is $329.99 at Palmetto State Armory.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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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