M4E1 Threaded 8" .300 Blackout Complete Upper Receiver w/R-ONE Handguard

Aero Precision

Overview

The Aero Precision M4E1 Threaded 8" .300 Blackout Complete Upper Receiver is designed for builders looking to create a compact and versatile AR-15 platform. With its 8-inch barrel tuned for the .300 Blackout caliber, this upper offers the flexibility to handle both subsonic and supersonic ammunition effectively, making it a great choice for various shooting applications. Commonly found in short-barreled rifles and pistol builds, this upper receiver is a solid option for those seeking enhanced maneuverability without sacrificing performance.