Sons Of Liberty Gun Works presents the M4-L89 5.56X45 NATO 10.5'' BBL 9.75'' L89 Rail W/NOX9, a testament to superior design and engineering. This assembled upper receiver is crafted for AR-15 enthusiasts, offering precision and reliability. Its anodized black finish enhances durability and resistance to wear, while the 10.5-inch barrel with a 1/2-28 muzzle threading and 1-7 twist rate ensures exceptional accuracy.

Ideal for recreational shooting and competitive scenarios, the M4-L89 integrates seamlessly with standard AR-15 parts. Sons Of Liberty Gun Works is renowned for its commitment to quality, ensuring this upper receiver meets the high standards of firearm enthusiasts.

Key Features:
- Manufacturer: Sons Of Liberty Gun Works
- Model: M4-L89
- Caliber: 5.56X45 NATO
- Finish Color: Anodized Black
- Barrel Length: 10.5''
- Muzzle: 1/2-28
- Twist: 1-7
- Style: Assembled
- Weight: 3.24 lbs