CMMG MK4 upper receiver assembly in Coyote Tan finish. Quality AR-15 compatible upper with professional-grade construction for reliable performance.
Fits: AR-15
The CMMG MK4 upper receiver assembly represents a straightforward, no-nonsense approach to AR-15 component building. This upper receiver is engineered to exacting standards and finished in Coyote Tan—a practical, field-proven color that blends well in varied environments.
This upper receiver assembly provides the foundation for a reliable AR-15 rifle. Whether you're building your first AR or adding to an existing collection, CMMG's MK4 platform delivers the quality and compatibility shooters depend on.
The modular design of the AR-15 platform means you can pair this upper with your choice of lower receiver to create a complete rifle tailored to your specific needs. CMMG's attention to detail in manufacturing ensures smooth function and longevity.