Aero Precision is a state of the art manufacturer which crafts superior parts, uppers, and complete rifles. Every component is engineered to razor thin tolerances within Mil-spec standards and is manufactured with the most advanced technologies available. Aero Precision pushes the boundaries of manufacturing with perfect engineering and clean machining by developing and evolving existing processes. When you need perfection and there is no margin of error, you need Aero Precision!

Aero Precision is producing this innovative AR-15 Enhanced Upper Receiver Assembly that combines the BAR handguard mount into the upper itself. This receiver with handguard mount is a one-piece design, precision machined from the same aluminum forging. The BAR system handguard mount is integrally machined into the upper receiver providing more strength and durability to your rifle. With M4 feed ramps and laser engraved T-Markings, it's ready for your next high performance AR platform build. It's ready to accept any standard AR-15 lower receiver and includes a port door and forward assist already installed. This upper can be used with any standard AR caliber build including, .22 LR, 5.56 NATO, .223 Rem, .300 BLK, or 6.8 SPC. If you're looking for an affordable solid AR upper to start your next build then you're looking for the Aero Precision M4E1 Enhanced Upper Receiver Assembly!

Specifications and Features:
Aero Precision APAR600201AC
AR15 M4E1 Enhanced Upper Receiver Assembly
Integral BAR-System Handguard Mount
M4 Feed Ramps
.250 takedown Pin Holes
Laser Engraved T-Markings
Port Door Installed
Forward Assist Installed
7075-T6 Machined Aluminum
Black

Fits:
For use with Aero Precision Quantum Series handguards.
Also fits most other BAR-System handguards.

Includes:
Port Door (installed)
Forward Assist (installed)
Proprietary Barrel Nut
Barrel Nut Wrench