Aero Precision EPC 9 Threaded Upper Kodiak Brown 9mm w/LRBHO

Aero Precision EPC-9 Upper Receiver Features The EPC-9 upper receiver integrates Aero Precision s proprietary Last Round Bolt Hold Open (LRBHO) mechanism ensuring that the bolt locks back reliably after the final round is fired-provided Glock-pattern magazines are used. This feature enhances reloading efficiency and reflects Aero's commitment to precision-engineered solutions for pistol caliber carbine systems. Constructed from custom forged 7075-T6 aluminum the upper provides a high-strength foundation and is finished in a rich Kodiak Brown anodizing for added corrosion resistance and visual appeal. The receiver includes laser-engraved T-marks for consistent rail positioning and features a dimple above the barrel threads to assist with proper handguard timing. It accepts standard AR15 takedown and pivot pin lug patterns maintaining broad compatibility with existing lower receivers and components. Purpose-built for the EPC-9 platform this upper receiver is a top-tier choice for shooters building or upgrading a 9mm PCC with a refined performance-driven foundation. Aero Precision EPC-9 Upper Receiver Specifications Manufacturer: Aero Precision Model: EPC-9 Threaded Upper Receiver Color: Kodiak Brown Material: 7075-T6 Aluminum (custom forged) Finish: Anodized Caliber Compatibility: 9mm (PCC builds) Thread Pattern: Compatible with AR15 barrel nuts and handguards Last Round Bolt Hold Open (LRBHO) System (pre-installed) Dimple above threads for handguard alignment Laser-engraved T-markings on Picatinny rail Standard AR15 takedown/pivot pin lug pattern Compatibility: Only with Glock-pattern magazines for LRBHO functionality Application: AR-9 / EPC-9 upper receiver builds