CMMG MK4 AR15 Upper Receiver Assembly with Forward Assist

CMMG MK4 AR15 Upper Receiver Assembly

The CMMG MK4 upper receiver assembly represents a solid foundation for building or upgrading an AR15-pattern rifle. This precision-machined component is engineered to exacting standards for reliable performance in the field or at the range.

Key Features

• Forward Assist: Integrated forward assist for positive bolt closure when needed
• Quality Construction: Precision-machined from quality materials for durability and reliability
• Black Finish: Durable black finish resists corrosion and blends with modern tactical aesthetics
• AR15 Compatible: Designed to work with standard AR15 components and lower receivers
• MK4 Platform: Part of CMMG's proven MK4 modular system

What You Get

This upper receiver assembly serves as the foundation for your AR15 build or upgrade. The forward assist provides a mechanical advantage when seating the bolt carrier group, a feature valued by shooters who prefer positive control over their firearm's operation.

Ideal For

Builders looking for a quality upper receiver component, shooters upgrading existing rifles, and those who appreciate the reliability and control that a forward assist provides. Whether you're assembling your first AR or your tenth, this CMMG component delivers the precision and dependability you expect from a recognized manufacturer.