CMMG 55AC710 Resolute 100 MK4 Rifle 5.56 NATO 16.1” Barrel 30rd Black (6-Position Stock, M-LOK Handguard)

The CMMG 55AC710 Resolute 100 MK4 Rifle is a purpose-engineered semi-automatic rifle chambered in 5.56 NATO designed for balance, accuracy, and maneuverability.

Key Features

• Barrel: 16.1 inches, 4140CM steel with SBN treatment, MT contour, and 1:7 twist rate
• Muzzle Device: A2 flash hider with 1/2 x 28 muzzle thread
• Operating System: Direct impingement gas system with mid gas port and non-adjustable 0.750" gas block
• Upper Receiver: Forged 7075-T6 aluminum M4 type
• Lower Receiver: MK4 forged 7075-T6 aluminum
• Handguard: 15-inch M-LOK
• Finish: Rugged Cerakote for exceptional protection
• Stock: M4 multi-position (6-position) stock
• Charging Handle: CMMG ZEROED ambidextrous
• Trigger: Mil-Spec single stage with ZEROED trigger guard
• Safety Selector: CMMG mil-spec
• Magazine Compatibility: 10 and 30 round magazines
• Weight: Approximately 6.4 lbs
• Overall Length: 33" to 36.3" adjustable
• Included: 1 CMMG magazine

Overview

Crafted for users demanding uncompromising quality, this MK4 rifle balances precision and maneuverability. The 16" barrel is equipped with an A2 birdcage flash hider to reduce muzzle flash. The 7075-T6 aluminum upper and lower receivers provide strength and durability, paired with a 15" M-LOK handguard for mounting accessories. An ergonomic CMMG ZEROED pistol grip and an enhanced trigger guard improve both function and aesthetics. The multi-position M4 stock allows adjustable length of pull for customized fit.