CMMG MK4 Upper Receiver Assembly in Tungsten

CMMG MK4 Upper Receiver Assembly

The CMMG MK4 upper receiver assembly represents solid engineering for the modern AR15 platform. This component is the foundation of your rifle's accuracy and reliability.

Key Features

• Tungsten Finish: Distinctive appearance combined with corrosion resistance
• MK4 Design: CMMG's proven upper receiver platform
• AR15 Compatible: Works with standard AR15 lower receivers
• Quality Construction: Precision machining for tight tolerances

What You Get

This is an upper receiver assembly—the complete top half of your rifle. It includes the receiver itself, ready for barrel installation and component assembly. This is an ideal choice for builders who want a quality foundation or shooters looking to upgrade their existing rifle.

Why Choose This Upper

CMMG has built a reputation for reliable, well-engineered components. The MK4 platform offers the flexibility you need to customize your rifle while maintaining the quality standards serious shooters demand. The tungsten finish sets it apart visually while providing practical protection against the elements.

Whether you're building your first AR or your tenth, this upper receiver assembly delivers the precision and reliability that matter when you're on the range.