CMMG RESOLUTE MK4 .300 BLK

The CMMG RESOLUTE MK4 is built on the Mk4 AR-15 platform to deliver .300 BLK performance in a carbine-length format. It is suitable for range work, suppressed or subsonic configurations, and general-purpose applications where modularity and reliability are priorities.

The RESOLUTE MK4 pairs a 16.1″ MT-contour barrel finished in Cerakote with CMMG’s EML15 M-LOK handguard for a balance of durability and lightweight handling. Controls and ergonomics are provided by CMMG ZEROED parts including an ambidextrous charging handle, ZEROED drop-in trigger, and RipStock receiver extension for user-adjustable fit.

Key Specifications

• The platform is Mk4.
• The caliber is .300 BLK.
• The operating system is Direct Impingement.
• The barrel length is 16.1 inches.
• The barrel twist is 1:7.
• The barrel material is 4140CM SBN.
• The muzzle device is a CMMG ZEROED Muzzle Brake.
• The upper receiver is Billet 6061 T6 Aluminum.
• The lower receiver is Mk4 Forged 7075 T6 Aluminum.
• The hand guard is a CMMG EML15 M-LOK.

The CMMG RESOLUTE MK4 .300 BLK combines modern features and ZEROED components to create a versatile carbine for shooters seeking .300 BLK capability. Buy the CMMG RESOLUTE MK4 .300 BLK online today to add a purpose-built .300 BLK rifle to your collection of CMMG firearms.