Aero Precision's M4E1 Upper Receiver is precision machined from 7075 T6 aluminum, offering exceptional durability and performance. The 10.5" 5.56 NATO barrel is designed for optimal accuracy and reliability, making it ideal for range time and training sessions. Aero Precision is renowned for innovation and quality in firearm components.

Key Features:

• Manufacturer: Aero Precision
• Model: M4E1
• Caliber: 5.56 NATO
• Barrel Length: 10.5"
• Finish Color: Anodized Black
• Optic Footprint: Picatinny
• Unique Features: Enhanced Handguard with anti-rotation tabs
• What's In The Box: Upper Receiver, Handguard, Barrel Nut, Wrench