The Aero Precision M4E1 5.56 ASSEM UPPER GOVT 11.5'' BBL CARBINE THREADED FDE is a testament to precision engineering and robust design. Featuring an anodized finish in Flat Dark Earth, this upper receiver is crafted for the AR-15 platform, offering a government contour and a carbine-length gas system for optimal performance. The ATLAS R-ONE Handguard ensures a lightweight build with a full top Picatinny rail for versatile attachment options.

Ideal for range time and training, this upper receiver is praised for its quality and reliability. Aero Precision is renowned for innovation and craftsmanship, making it a trusted choice among firearm enthusiasts.

Key Features:
- Manufacturer: Aero Precision
- Model: M4E1
- Caliber: 5.56 mm NATO
- Condition: New
- Action: Semi-Automatic
- Finish Color: Flat Dark Earth
- Barrel Length: 11.5"
- Number of Magazines: Not Included
- Capacity: Not Applicable
- Optic Footprint: Not Specified
- Unique Features: ATLAS R-ONE Handguard
- Night Sights: No
- External Safety: No
- Threaded Barrel: Yes
- What's In The Box: Upper Receiver Only
- Weight: 3.52 lbs
- Length: Not Specified
- Width: Not Specified