Blem PSA Complete Lower 300BO, JAKL Classic EPT, Black
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Palmetto State Armory
Overview
The Blem PSA Complete Lower in 300 Blackout is a fully assembled lower receiver designed specifically for the AR-15 platform. Constructed from 7075-T6 aluminum and featuring a forged style, this lower offers the durability and strength needed for robust builds. With a trigger pin diameter of .154, it is compatible with a wide range of aftermarket components. This lower is commonly used in pistol builds chambered in 300 Blackout, making it an excellent choice for those looking to create a compact, high-performance firearm.
Specifications
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Build history on GunPartPicker
Builders have been adding the Palmetto State Armory Blem PSA Complete Lower 300BO, JAKL Classic EPT, Black to their builds on GunPartPicker since January 2026. All time, it ranks #490 of the 961 lower receivers builders have added. Builds with this lower receiver are nearly all chambered in 300 Blackout, nearly all on pistol-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 26 builds that include this one
PSA 7.5" 300AAC Blackout 1/7 Nitride 9" Lightweight M-LOK Upper With BCG & CH
Rise Armament Super Sporting AR15/10 Single Stage Trigger - Flat - Dtom Special Edition
Tactical Excellence - NCSTAR Tactical Mil-Spec Stock for AR-15 in Black - VG087
FAXON Chameleon 5.56 Complete Nitride Bolt Carrier Group - FF556BCGCNITRIDE-NCR
EOTECH EXPS2-0 Holographic Weapon Sight - Green Reticle
Battle Arms Development Rack Ambidextrous AR-15 Charging Handle - Mod C
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