The Aero Precision M4E1 Superlative Arms Piston Complete Upper Receiver Group is a testament to superior design and engineering. This upper receiver is crafted with precision, featuring a 16-inch barrel and a 15-inch handguard, all finished in a sleek anodized black. Its standout features include a medium contour barrel with a 1-7 twist, ensuring optimal performance and reliability. Designed for ease of use, it integrates seamlessly with AR-15 platforms, making it a versatile choice for enthusiasts.

Ideal for range time and training, this upper receiver group offers a reliable and high-performing option for firearm enthusiasts. Aero Precision is renowned for its innovation and commitment to quality, ensuring that each component meets the highest standards.

Key Features:
- Manufacturer: Aero Precision
- Model: M4E1 Superlative Arms Piston
- Caliber: 5.56 mm NATO
- Condition: New
- Action: Semi-Automatic
- Finish Color: Anodized Black
- Barrel Length: 16"
- Number of Magazines: N/A
- Capacity: N/A
- Optic Footprint: N/A
- Unique Features: Medium contour barrel, 1-7 twist
- Night Sights: No
- External Safety: No
- Threaded Barrel: Yes
- What's In The Box: Upper receiver group
- Weight: N/A
- Length: N/A
- Width: N/A