Aero Precision's M4E1 300BLK Assemble Upper Gov 16''BBL Pistol-Length Thrd Blk is a testament to superior engineering and design. Featuring a 16-inch barrel with a 1:7 twist rate, this upper receiver is crafted from 4150 Chrome Moly Vanadium with a QPQ corrosion-resistant finish, ensuring durability and precision. The ATLAS S-ONE handguard adds a lightweight, ergonomic touch, making it ideal for versatile AR-15 builds.

Perfect for range time and training, this upper receiver offers seamless compatibility with AR-15 platforms, enhancing your shooting experience with its precision and reliability. Aero Precision is renowned for its innovation and quality craftsmanship, making this a top choice for firearm enthusiasts.

Key Features:
- Manufacturer: Aero Precision
- Model: M4E1 300BLK Assemble Upper
- Caliber: .300 Blackout
- Condition: New
- Action: Semi-Automatic
- Finish Color: Anodized Black
- Barrel Length: 16"
- Number of Magazines: Not Included
- Capacity: Not Included
- Optic Footprint: Not Included
- Unique Features: ATLAS S-ONE Handguard
- Night Sights: No
- External Safety: No
- Threaded Barrel: Yes
- What's In The Box: Upper Receiver Only
- Weight: 29 oz
- Length: Not Specified
- Width: Not Specified