Aero Precision M4E1 5.56 Assembled Upper Receiver 18 Inch Barrel 12 Inch Handguard

The M4E1 5.56 Assm Upper 18'' Rifle with a 12'' Atlas S-One Handguard from Aero Precision is a remarkable addition to any AR-15 enthusiast's collection, designed for both performance and versatility. This complete upper receiver assembly features a sleek black anodized finish, ensuring durability and a professional appearance. Chambered in 5.56 mm NATO, it boasts a 1-7 twist rate, optimizing accuracy and stability for a variety of shooting applications, whether at the range or in the field. The innovative M-LOK Atlas S-One handguard provides ample space for accessories while maintaining a lightweight profile, enhancing maneuverability without sacrificing strength. This upper receiver is ideal for those looking to build a reliable and effective rifle platform, offering seamless compatibility with standard AR-15 lower receivers. With its in-stock availability, the M4E1 5.56 Assm Upper is ready to elevate your shooting experience, making it an essential component for both seasoned marksmen and newcomers alike.