COLT M4 UPPER BLK
Visit RSR GroupDescription
The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on.
- M4 Feed Ramps
- Forward Assist
- Upper Receiver
Product Information
| Manufacturer | Colt's Manufacturing |
| Accessories | Dust Cover, Forward Assist, M4 Feed Ramps |
| Caliber | 223 Remington |
| Caliber | 556NATO |
| Color | Black |
| Manufacturer Part # | SP63528 |
| Subcategory | Upper Receivers |
| Type | Upper |