The EPC-9 upper receiver is the ultimate upgrade for any AR9 build, offering enhanced functionality and performance. It features a last round bolt hold open mechanism for reliable cycling and smooth operation, ensuring you never miss a beat during shooting. Designed for compatibility with most standard AR-15 barrel nut and handguard combinations, this upper receiver seamlessly integrates into your setup with ease. Whether you are building a pistol-caliber carbine or upgrading an existing platform, the EPC-9 upper receiver is engineered to elevate your AR9 build to the next level of precision and efficiency.

The last round bolt hold open mechanism ensures the firearm remains locked open after the last round is fired
It accepts most AR-15 compatible barrel nuts and handguards, offering versatility and compatibility with various components
Dimple above threads allows for proper handguard timing, ensuring a secure and stable attachment of accessories
Standard AR-15 takedown and pivot pin lug pattern ensures compatibility
Machined from custom-forged 7075-T6 aluminum, offering a robust and lightweight structure
Features laser-engraved t-marks for precise and clear markings

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