The Aero Precision M4E1 .300 Blackout Assembled Upper Receiver is a testament to precision engineering and design excellence. Crafted from 7075 T6 aluminum with a black anodized finish, it features an 8" 4150 Chrome Moly Vanadium barrel with a 1-7 twist rate, ensuring superior performance and reliability. The M-LOK handguard provides a versatile platform for accessories, making it ideal for range time and training sessions. Aero Precision is renowned for its innovation and quality in firearm components.

Key Features:

• Manufacturer: Aero Precision
• Model: M4E1
• Caliber: .300 Blackout
• Condition: New
• Action: Semi-Automatic
• Finish Color: Anodized Black
• Barrel Length: 8"
• Number of Magazines: N/A
• Capacity: N/A
• Optic Footprint: N/A
• Unique Features: M-LOK Handguard, 1-7 Twist Rate
• Night Sights: No
• External Safety: No
• Threaded Barrel: Yes
• What's In The Box: Upper Receiver Only
• Weight: 18 oz
• Length: N/A
• Width: N/A