The Aero Precision M4E1 5.56 Assembled Upper is a testament to precision engineering and quality craftsmanship. Featuring a 16" 5.56 NATO barrel with a mid-length gas system, this upper receiver is designed for optimal performance and reliability. The anodized black finish and enhanced forging give it a sleek, billet look, while the R-ONE handguard offers modularity with M-LOK attachment points.

Ideal for range time and training, the M4E1 upper is compatible with mil-spec AR-15 components, making it a versatile choice for firearm enthusiasts. Aero Precision is renowned for its innovation and commitment to quality, ensuring a superior shooting experience.

Key Features:
- Manufacturer: Aero Precision
- Model: M4E1
- Caliber: 5.56 NATO
- Barrel Length: 16"
- Finish Color: Anodized Black
- Threaded Barrel: Yes
- What's In The Box: Upper Receiver, R-ONE Handguard
- Weight: 4.11 lbs
- Length: 30.25"