Product Description
Built for shooters who want extended-range performance from an AR-15 platform, the CMMG RESOLUTE MK4 complete upper receiver group is chambered in 6mm Advanced Rifle Cartridge (6mm ARC) and features a 16.1-inch barrel for a balanced blend of accuracy and handling. Designed to pair with a standard AR-15 lower, this complete upper assembly is engineered for durable, long-term reliability and finished in Armor Black Cerakote for enhanced wear and corrosion resistance. With quality components like a flat-top (A3) upper, M-LOK handguard, and a factory-installed muzzle brake, it’s an excellent choice for precision target shooting and hunting-style builds.
Product Highlights
- Chambered in 6mm ARC for excellent external ballistics and effective long-range performance.
- 16.1-inch barrel with 1:7.5 twist to support modern 6mm projectile selection.
- Armor Black Cerakote finish on the receiver/handguard for added durability and corrosion protection.
- Complete upper assembly designed to fit standard AR-15 lowers for an easy caliber upgrade.
- Modern accessory-ready configuration with CMMG EML15 M-LOK handguard and flat-top receiver.
Specs
- Brand: CMMG
- Manufacturer Part Number: 60B1091-AB
- UPC: 810097504660
- Platform Compatibility: AR-15
- Chambering: 6mm Advanced Rifle Cartridge (6mm ARC)
- Barrel Length: 16.1 in
- Barrel Material: 416 Stainless Steel
- Barrel Finish: Black Salt Bath Nitride
- Twist Rate: 1:7.5
- Muzzle Threads: 5/8"-24
- Gas System Length: Rifle
- Gas Block Diameter: 0.750 in
- Upper Receiver Type: A3 Flat-Top
- Upper Receiver Material: Billet 6061-T6 Aluminum
- Handguard: CMMG EML15 M-LOK
- Muzzle Device: CMMG ZEROED Muzzle Brake
- Included Components: Bolt carrier assembly; ambidextrous charging handle; polymer dust cover
- Finish/Color: Cerakote, Armor Black
- Weight: 4.3 lb
- Overall Length: 25 in
- Country of Origin: United States of America
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