Cmmg Resolute Mkg Fixed 45Acp 16.1 Armor Black

The CMMG Resolute MkG in .45 ACP is a modern carbine built for shooters who want rifle ballistics and durability without the bulk of a full-size platform. Chambered in the proven .45 ACP—a round with over a century of field-tested performance—this 16.1-inch rifle strikes the balance between maneuverability and range that submachine gun-caliber carbines are designed to deliver. It feeds reliable Glock-pattern .45 ACP magazines and leverages CMMG's proprietary fixed-ejector radial delayed blowback system, an evolution that brings precision engineering to a compact action.

The Resolute MkG comes outfitted with CMMG's ZEROED line of parts and accessories, meaning you're getting a cohesive rifle ready to work out of the box. The EML15 M-LOK handguard strips away unnecessary weight while keeping mounting real estate where it counts—at 3, 6, 9, and 12 o'clock positions—so you can attach optics, lights, and grips without over-building. The 6061-T6 aluminum upper and 7075-T6 forged lower receiver keep things light at 6.0 pounds, and the 32.5-inch overall length makes it equally at home in a truck, on a range, or in a hunting scenario where a pistol-caliber carbine makes sense.

Build quality shows throughout: a 4140CM SBN barrel with 1:16 twist, ZEROED muzzle brake at 0.578 x 28 threads, ambidextrous charging handle and safety selector, RipStock, and a drop-in ZEROED trigger. Cerakote Armor Black finish protects against the elements. This is a rifle for the shooter who respects .45 ACP's heritage but wants modern ergonomics and reliability.

Key Features

• .45 ACP chambering with Glock-pattern magazine compatibility
• Fixed-ejector radial delayed blowback operating system
• 16.1-inch barrel (1:16 twist) with CMMG ZEROED muzzle brake
• Lightweight billet aluminum upper and forged aluminum lower receiver
• EML15 M-LOK handguard with slots at 3, 6, 9, and 12 o'clock
• Ambidextrous charging handle and ZEROED safety selector (60/90°)
• RipStock and carbine-length buffer system
• Drop-in ZEROED trigger and integrated trigger guard
• Cerakote Armor Black finish
• 6.0 lbs, 32.5 inches overall length

Specifications

Frequently Asked Questions

What magazines does the CMMG Resolute MkG .45 ACP use?

The Resolute MkG is compatible with Glock-pattern .45 ACP magazines, which are readily available and commonly owned by shooters familiar with Glock pistols. The rifle comes set up for 13-round capacity magazines.

Is this rifle good for hunting or target shooting?

The Resolute MkG's 16.1-inch barrel and .45 ACP chambering deliver rifle-level ballistics and accuracy in a compact carbine platform. It's suited to shooters who want more performance and range than a pistol or submachine gun caliber carbine offers, whether for hunting, sport shooting, or home defense scenarios.

What's the difference between this rifle's operating system and a standard blowback?

The Resolute MkG uses a fixed-ejector radial delayed blowback system, which is an evolution of CMMG's radial delayed blowback design. This operating system is more refined than straight blowback, providing better control and reliability in a compact action.

Can I mount optics and accessories on the handguard?

Yes. The EML15 M-LOK handguard includes mounting slots at the 3, 6, 9, and 12 o'clock positions, allowing you to attach lights, lasers, grips, and other M-LOK-compatible accessories. There is no full-length Picatinny rail on top, which helps keep weight down while preserving practical mounting real estate.