The Aero Precision EPC-9 Stripped Lower Receiver is a bare, unassembled lower receiver designed for pistol-caliber carbines (PCCs) chambered in 9mm or similar calibers. As a stripped lower, it does not include internal components such as the trigger assembly, safety selector, or buffer system, allowing builders to fully customize their PCC with their choice of parts. This serialized component is considered the firearm under U.S. law and must be transferred through a licensed dealer. Precision-machined from 7075-T6 aluminum, the EPC-9 Stripped Lower is built for durability and compatibility with Glock-pattern magazines. It features an integrated trigger guard for added strength and a flared magazine well to facilitate faster reloads. The receiver also includes threaded bolt catch pins and a rear takedown pin detent hole, making assembly easier. Finished with Type III hard anodizing for corrosion resistance, the Aero Precision EPC-9 Stripped Lower is an excellent foundation for building a custom pistol-caliber carbine.