Cmmg Uppr Dsnt Mk4 5.56 10.5"

The CMMG Upper Desert Mk4 5.56 10.5" is a complete upper receiver assembly designed for short-range engagement, tactical operations, and precision carbine work in confined environments. This compact platform delivers the ballistic efficiency of 5.56 NATO, making it ideal for close-quarters combat, vehicle operations, and home defense scenarios where full-length uppers may be impractical.

With a 10.5-inch barrel length, this upper receiver provides optimal velocity retention while maintaining the handling advantages of a short-barreled rifle configuration. CMMG's Desert Mk4 designation indicates a refined manufacturing standard with enhanced heat treatment and precision machining, ensuring consistent chamber concentricity and reliable feeding across various ammunition types.

This upper receiver is particularly beneficial for law enforcement, military personnel, and serious civilian operators who demand sub-2-MOA accuracy and absolute reliability. It pairs seamlessly with standard AR-15 lower receivers and components, making it an excellent upgrade path for existing platforms or a solid foundation for new builds.