The Aero Precision EPC-9 Enhanced Complete Upper is a fully assembled upper receiver designed for pistol-caliber carbines (PCCs) in 9mm or similar calibers. As a complete upper, it includes all essential components, such as the enhanced upper receiver, barrel, handguard, and blowback gas system, and is ready to attach to a compatible EPC-9 lower receiver. This eliminates the need for additional assembly, providing a straightforward and reliable solution for building a high-performance PCC. The EPC-9 Enhanced Complete Upper features Aero Precision’s Enhanced Upper Receiver, which integrates the handguard mounting system directly into the receiver for increased rigidity and simplified assembly. Paired with the proprietary Enhanced Handguard, it offers a continuous Picatinny rail and M-LOK slots for accessory mounting. The barrels are precision-machined, typically finished in QPQ nitride for durability and corrosion resistance, and come in various lengths (e.g., 5.5", 8.3", and 16") to suit different applications. With a sleek design, modular compatibility, and durable construction, the EPC-9 Enhanced Complete Upper is an excellent choice for PCC enthusiasts seeking a premium build.