The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on.
- Accessories:
- Dust Cover, Forward Assist, M4 Feed Ramps
- Caliber:
- 223 Remington
- Caliber **:
- 556NATO
- Manufacturer:
- Colt's Manufacturing
- Manufacturer Part No.:
- SP63528
- Type:
- Upper
- Sub Category:
- Upper Receivers
- Color:
- Black
- Prop 65 Warning:
- Prop65: WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
