Palmetto State Armory All Palmetto State Armory upper receivers

PSA 7.5" 300 Blackout 1:8 Phosphate 7" Lightweight M-LOK Upper With BCG & CH

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Palmetto State Armory

Overview

The PSA 7.5" 300 Blackout Upper Receiver is a complete assembly designed for the AR-15 platform, featuring a 7.5-inch barrel with a 1:8 twist rate that optimizes stabilization for a range of bullet weights. This upper is made from durable 7075-T6 aluminum and is finished in a sleek black color, ensuring both strength and aesthetic appeal. Commonly found in builds utilizing a carbine gas system, this upper is ideal for those looking to maximize the versatility of the 300 Blackout caliber.

Specifications

ColorBlack

PlatformAR-15

Caliber300 Blackout

AssemblyComplete

Barrel Length7.5

Twist Rate1:8

Material7075-T6 Aluminum

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PSA 7.5" 300 Blackout 1:8 Phosphate 7" Lightweight M-LOK Upper With BCG & CH

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September 2026 on GunPartPicker

PSA 7.5" 300 Blackout 1:8 Phosphate 7" Lightweight M-LOK Upper With BCG & CH 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 #380 of the 1,654 upper receivers builders have added.

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Updated Oct 3, 2026 · from real builds on GunPartPicker