Sons of Liberty Gun Works presents the SOLGW M4-EXO3 13.7" 5.56 URG, a testament to quality engineering and design. This complete upper receiver is crafted with a 13.7" combat barrel and a NOX muzzle device, ensuring precision and durability. The EXO3 handguard enhances functionality, making it ideal for range time and training sessions. Sons of Liberty Gun Works is renowned for their commitment to quality and innovation, backed by a lifetime warranty.

Key Features:
- Manufacturer: Sons of Liberty Gun Works
- Model: EXO3
- Caliber: 5.56 NATO
- Condition: New
- Action: Semi-Automatic
- Finish Color: Black
- Barrel Length: 13.7" Pinned (16" OAL)
- Number of Magazines: N/A
- Capacity: N/A
- Optic Footprint: N/A
- Unique Features: NOX Muzzle Device, EXO3 Handguard
- Night Sights: No
- External Safety: No
- Threaded Barrel: Yes
- What's In The Box: N/A
- Weight: 3.8125 lbs
- Length: 30.3 in
- Width: 3 in