Palmetto State Armory All Palmetto State Armory upper receivers

PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13" Lightweight Hex M-LOK Upper With BCG & CH, FDE

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PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13" Lightweight Hex M-LOK Upper With BCG & CH, FDE - Upper Receiver for AR-15

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Palmetto State Armory

Overview

The PSA 16" Mid-Length 5.56 NATO Upper Receiver is a complete upper assembly designed for the AR-15 platform, featuring a 16-inch barrel with a 1:7 twist rate, which stabilizes a wide range of bullet weights for enhanced accuracy. Its mid-length gas system offers a smoother recoil impulse compared to carbine-length systems, making it a popular choice for builders looking for a balance of performance and shootability. This upper is often found in versatile builds aimed at both tactical applications and recreational shooting, particularly those that favor a lightweight setup.

Specifications

Barrel Length16

AssemblyComplete

Caliber5.56 NATO

PlatformAR-15

Gas System LengthMid-Length

ColorFDE

Twist Rate1:7

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PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13" Lightweight Hex M-LOK Upper With BCG & CH, FDE

3 options

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Build history on GunPartPicker

Builders have been adding the PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13" Lightweight Hex M-LOK Upper With BCG & CH, FDE to their builds on GunPartPicker since March 2026. All time, it ranks #620 of the 1,654 upper receivers builders have added.

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Updated Oct 3, 2026 · from real builds on GunPartPicker