CMMG MK17 lower receiver assembly in durable Armor Black finish. Precision-machined component for AR-platform rifle builds with quality construction.
The foundation of any quality AR-platform rifle begins with a properly manufactured lower receiver. CMMG's MK17 lower receiver assembly represents the kind of precision engineering that separates reliable firearms from the rest.
The lower receiver is the regulated component of an AR-platform rifle—the part that legally defines the firearm. CMMG manufactures their receivers to exact specifications, ensuring they function reliably with quality upper assemblies and components.
Whether you're building your first AR or adding to an existing collection, a well-made lower receiver is the smart foundation for a rifle you can trust. The MK17 assembly delivers the precision and durability serious shooters expect from CMMG.