PSA 11.5" 5.56 NATO 1/7 Nitride 10.5" Lightweight Hex M-LOK Upper - Without BCG & CH

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Palmetto State Armory

Overview

The PSA 11.5" 5.56 NATO Upper Receiver is a complete assembly designed for AR-15 platforms, featuring an 11.5-inch barrel with a 1:7 twist rate and a carbine-length gas system. This configuration provides reliable cycling and optimal stability for a variety of ammunition types, making it suitable for both tactical and competitive shooting applications. Builders often utilize this upper in short-barreled rifles that prioritize maneuverability while maintaining versatility in caliber options.

Specifications

SKU51655200888

Barrel Length11.5

Caliber5.56 NATO

Twist Rate1:7

PlatformAR-15

AssemblyComplete

Gas System LengthCarbine

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PSA 11.5" 5.56 NATO 1/7 Nitride 10.5" Lightweight Hex M-LOK Upper - Without BCG & CH

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September 2026 on GunPartPicker

PSA 11.5" 5.56 NATO 1/7 Nitride 10.5" Lightweight Hex M-LOK Upper - Without BCG & CH ranked #84 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since January 2026. All time, it ranks #190 of the 1,873 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.

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Updated Oct 30, 2026 · from real builds on GunPartPicker