CMMG Resolute MK57 5.7 X 28 16.1 Barrel 20-Rounds

CMMG Resolute MK57 Features The Resolute MK57 incorporates several high-quality features designed to enhance its usability and performance. The radial delayed blowback operating system ensures smoother cycling and reduced felt recoil which contributes to enhanced shooting accuracy and comfort. The rifle is finished with a durable Cerakote coating which provides excellent resistance against corrosion and wear. Additionally the CMMG ZEROED muzzle brake effectively reduces muzzle rise allowing for rapid follow-up shots. CMMG Resolute MK57 Specifications Caliber: 5.7x28mm Operating System: Radial Delayed Blowback Barrel Length: 16.1 inches Barrel Twist: 1:9 Barrel Material: 4140 Chrome Moly Steel Salt Bath Nitride Finish Muzzle Device: CMMG ZEROED Muzzle Brake Muzzle Thread: 1/2 x 28 Upper Receiver: Billet 6061 T6 Aluminum Lower Receiver: Mk57 Forged 7075 T6 Aluminum Hand Guard: CMMG EML15 M-LOK Finish: Cerakote Charging Handle: CMMG ZEROED Ambidextrous Pistol Grip: CMMG ZEROED Pistol Grip Buffer Type: Carbine Receiver Extension: CMMG 6 Position Fastback w/Ambi Sling Plate Stock / Brace: CMMG RipStock Trigger Type: ZEROED Drop-In Trigger Guard: Integrated Safety Selector: CMMG ZEROED 60/90 Degree Magazine: 20rd Promag Weight: 6.2 lbs Overall Length: 32.5 inches