Aero Precision's M4E1 .300 BO Assembled Upper Receiver stands out with its precision engineering and robust design. Featuring a 10'' barrel, this upper receiver is crafted from 7075 T6 aluminum and anodized for durability. It includes a low profile gas block and a pistol length gas tube, making it ideal for range time and training sessions. Aero Precision is renowned for its innovative designs and commitment to quality.

Key Features:
- Manufacturer: Aero Precision
- Model: M4E1
- Caliber: .300 Blackout
- Finish Color: Anodized Black
- Barrel Length: 10"
- Gas System Length: Pistol
- Unique Features: Enhanced milling for grip and visual appeal
- What's In The Box: M4E1 Enhanced Upper Receiver, Enhanced Handguard, 10" .300 Blackout Barrel, Low Profile Gas Block, Pistol Length Gas Tube