Palmetto State Armory PSA Gen4 9mm BCG - Nitride - 5165449845 - Bolt Carrier Group for AR-15 - view 1

Palmetto State Armory

Overview

The PSA Gen4 9mm BCG is designed specifically for 9mm builds, offering reliable cycling and performance tailored for this caliber. Its nitride finish enhances durability and resistance to wear, making it a robust choice for builders looking to create a dependable firearm. This bolt carrier group is commonly found in 9mm AR-15 configurations, ensuring a seamless fit and function within those setups.

Specifications

Caliber9mm
FinishNitride

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September 2026 on GunPartPicker

PSA GEN4 9mm BCG - Nitride - 5165449845 ranked #108 of the 217 bolt carrier groups builders added on GunPartPicker in September 2026.

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