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