PSA AR-15 Upper 5.56 16" Mid-Length 1/7 Nitride 13.5" M-LOK w/NiBx BCG & CH
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Palmetto State Armory
Overview
The PSA AR-15 Upper is a complete upper receiver assembly designed for the AR-15 platform, featuring a 16-inch barrel chambered in 5.56 NATO with a mid-length gas system. The 1:7 twist rate is optimized for stabilizing a variety of bullet weights, making it a versatile choice for different ammunition. This upper is commonly found in builds that prioritize a mid-length gas system and 5.56 NATO caliber, providing a balance of performance and reliability.
Specifications
PSA AR-15 Upper 5.56 16" Mid-Length 1/7 Nitride 13.5" M-LOK w/NiBx BCG & CH
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Build history on GunPartPicker
Builders have been adding the PSA AR-15 Upper 5.56 16" Mid-Length 1/7 Nitride 13.5" M-LOK w/NiBx BCG & CH to their builds on GunPartPicker since February 2026. All time, it ranks #917 of the 1,654 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
Updated · from real builds on GunPartPicker
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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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Fortis SHIFT Vertical Grip - M-LOK
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Hera USA CQR Gen 2 AR-15 Buttstock - 1215
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