PSA Complete Lower 300BO, JAKL, MOE EPT, F5 Brace, FDE

Palmetto State Armory PSA Complete Lower 300BO, JAKL, MOE EPT, F5 Brace, FDE - Lower Receiver for AR-15 - view 1

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Palmetto State Armory

Overview

The PSA Complete Lower 300BO is a fully assembled lower receiver designed specifically for the AR-15 platform, optimized for the 300 Blackout caliber. Made from durable 7075-T6 aluminum and featuring a forged construction, this lower is built to withstand the rigors of shooting while providing a solid foundation for your build. With a trigger pin diameter of .154, it is compatible with a wide range of aftermarket triggers. This lower commonly appears in pistol builds, particularly those chambered in 300 Blackout, making it a versatile choice for builders looking to enhance their firearm's capabilities.

Specifications

Caliber300 Blackout
PlatformAR-15
ColorFDE
StyleForged
Material7075-T6 Aluminum
AssemblyComplete
Trigger Pin.154

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Build history on GunPartPicker

Builders have been adding the PSA Complete Lower 300BO, JAKL, MOE EPT, F5 Brace, FDE to their builds on GunPartPicker since January 2026. All time, it ranks #516 of the 996 lower receivers builders have added. Builds with this lower receiver are nearly all chambered in 300 Blackout and nearly all AR-15.

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Builds Featuring This Part

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Builds in the community that include the PSA Complete Lower 300BO, JAKL, MOE EPT, F5 Brace, FDE

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