Aero Precision M4E1 Threaded 16" 5.56 Mid-Length Complete Upper Receiver w/ ATLAS R-ONE Handguard

Unleash the full potential of your AR-15 build with the Aero Precision M4E1 Threaded 16" 5.56 Mid-Length Complete Upper Receiver featuring the ATLAS R-ONE Handguard. Engineered for precision, durability, and versatility, this complete upper receiver assembly is designed to meet the rigorous demands of modern shooters while offering a lightweight, slim profile. Whether you're a competitive shooter, tactical operator, or firearms enthusiast, the M4E1 upper with ATLAS R-ONE Handguard delivers exceptional performance and customization options.

M4E1 Threaded Assembled Upper Receiver:
At the core of this assembly is the M4E1 Threaded Assembled Upper Receiver, engineered from high-quality forged aluminum for superior strength and durability. The M4E1 design incorporates enhanced features such as a threaded forward assist and port door, providing a sleek, streamlined appearance. Its robust construction ensures reliable performance in the most demanding conditions, making it an ideal choice for serious shooters.

ATLAS R-ONE Handguard:
The included ATLAS R-ONE Handguard is designed with size and weight in mind, providing ample real estate for all your attachment needs while maintaining a slim, lightweight profile. Crafted from durable aluminum, the R-ONE handguard offers exceptional strength without adding unnecessary bulk. Its proprietary ATLAS attachment system ensures a secure, dependable mount, giving you the confidence that your accessories will stay firmly in place. The handguard's continuous top Picatinny rail and multiple M-LOK slots provide versatile mounting options for optics, grips, lights, and other tactical accessories.

16" 5.56 CMV Barrel:
Equipped with a 16" 5.56 NATO barrel made from Chrome Moly Vanadium (CMV) steel, this upper receiver is built for accuracy, reliability, and longevity. The mid-length gas system provides a smoother recoil impulse and enhances the overall shooting experience. The barrel is finished with a corrosion-resistant coating, ensuring optimal performance and durability in various environments. With a 1:7 twist rate, this barrel is capable of stabilizing a wide range of bullet weights, making it versatile for different shooting applications.

Low Profile Gas Block and Mid-Length Gas Tube:
The Aero Precision M4E1 Complete Upper comes equipped with a low profile gas block and mid-length gas tube, providing reliable gas flow and consistent cycling. The low profile design of the gas block ensures it fits comfortably underneath the slim ATLAS R-ONE handguard, maintaining the handguard's sleek profile. This gas system setup is known for its reliability and smooth operation, contributing to a more enjoyable shooting experience.

Pre-Assembled for Convenience:
For your convenience, the Aero Precision M4E1 Threaded 16" 5.56 Mid-Length Complete Upper Receiver comes fully assembled. This allows you to skip the hassle of individual component assembly and get straight to the range. Simply install it onto your compatible lower receiver, add your preferred bolt carrier group (BCG) and charging handle (not included), and you'll be ready to go.

No BCG or Charging Handle Included:
Please note that this complete upper does not include a bolt carrier group (BCG) or a charging handle, allowing you the flexibility to choose components that best suit your specific needs and preferences.

Upgrade your AR-15 with the Aero Precision M4E1 Threaded 16" 5.56 Mid-Length Complete Upper Receiver featuring the innovative ATLAS R-ONE Handguard. Combining lightweight design, exceptional strength, and unparalleled versatility, this upper receiver assembly offers everything you need for a high-performance rifle build. Trust in Aero Precision’s commitment to quality and engineering excellence to elevate your shooting experience. Equip your AR-15 with the M4E1 Complete Upper Receiver and experience the precision, reliability, and customization that Aero Precision is renowned for.