CMMG RESOLUTE® Mk4 — 5.56 NATO, 14.5" Pinned & Welded (16" OAL), Cerakote® Armor Black, Includes 1x 30-Round Magazine | Model 55A060B-AB / 55A060BAB | UPC 810103479678
Compact Handling. Full-Length Compliance. CMMG Accuracy.
The CMMG RESOLUTE® Mk4 is engineered for shooters who want duty-grade reliability and competition-ready accuracy in a streamlined package that meets 16" rifle OAL requirements. Featuring a 14.5-inch barrel that’s pinned & welded to achieve a 16-inch overall length, this carbine keeps maneuverability high without compromising ballistic performance. Finished in Cerakote® Armor Black for exceptional wear and corrosion resistance, the Mk4 ships with a 30-round magazine (where legal) and the proven CMMG build quality that has made RESOLUTE a favorite among discerning shooters.
Whether you’re building a defensive carbine, a range workhorse, or a training rifle for classes, the RESOLUTE Mk4 delivers slick controls, dependable cycling, and repeatable precision in a configuration that checks every box.
Key Features at a Glance
Caliber: 5.56×45 NATO (compatible with .223 Rem; follow manufacturer guidance)
Barrel: 14.5" with pinned & welded muzzle device for 16" OAL compliance
Capacity: 30 rounds (1 magazine included; capacity subject to local laws)
Action: Semi-automatic direct-impingement AR-pattern rifle
Receiver/Handguard: AR-15 pattern with free-float handguard (M-LOK®-ready on most RESOLUTE variants)
Finish: Cerakote® Armor Black for abrasion, chemical, and corrosion resistance
Models: 55A060B-AB / 55A060BAB
UPC: 810103479678
Compliance Note: Pinned & welded muzzle device is a permanent attachment intended to meet minimum barrel/OAL length requirements in many jurisdictions. Always verify your local/state laws.
Why Shooters Choose the RESOLUTE Mk4
Maneuverability Without Sacrificing Velocity
The 14.5" barrel keeps the carbine lively in tight spaces, while the permanent muzzle device brings legal length to 16", protecting muzzle velocity and dwell-time for reliable cycling.
Cerakote Armor Black Durability
Cerakote® Armor Black delivers a low-glare tactical aesthetic with industry-leading resistance to abrasion, solvents, and environmental exposure—ideal for hard classes and inclement weather.
AR-15 Compatibility
Mk4 is AR-15 pattern, giving you broad compatibility with optics, stocks, triggers, and accessories. Upgrade as your mission evolves.
CMMG Fit & Finish
From clean machining to consistent gas timing, CMMG rifles are known for their out-of-the-box reliability, intuitive controls, and excellent accuracy with quality ammunition.
Ideal Use Cases
Home & Property Defense: Fast handling with dependable cycling and red-dot readiness.
Training & Classes: Durable finish and proven components for long course days.
General Purpose Carbine: A do-everything 5.56 platform that eats range time and drills.
Competition Practice: Legal 16" OAL with compact handling for barricade work and transitions.
Ownership Experience & Setup Tips
Optics: Pair with a micro red dot or LPVO; confirm mount height for your preferred cheek weld.
Sling & Light: Add a 2-point sling and a rail-mounted white light for a true GP setup.
Mags & Ammo: Use quality STANAG magazines and reputable 5.56/.223 loads; confirm zero with your duty load.
Maintenance: Lube generously during break-in; confirm torque on optics and handguard hardware after first range day.
Technical Specifications (55A060B-AB / 55A060BAB)
Caliber: 5.56×45 NATO
Operating System: Semi-auto, AR-15 DI
Barrel Length: 14.5" (pinned & welded to 16" OAL)
Overall Length: 16" barrel equivalent (exact OAL depends on stock configuration)
Finish: Cerakote® Armor Black
Magazine: (1) 30-round magazine included (where legal)
Stock/Brace: Adjustable AR-15 carbine stock (variant-dependent)
Handguard: Free-float, typically M-LOK® compatible (variant-dependent)
Model Numbers: 55A060B-AB / 55A060BAB
UPC: 810103479678
Small component details (trigger, muzzle device model, handguard length) may vary by production run. Always review your rifle’s product label for exact configuration.
Frequently Asked Questions
Q: Is the barrel actually 16 inches?
A: The barrel is 14.5", but the pinned & welded muzzle device creates a legal 16" overall barrel length. The permanent attachment cannot be removed without gunsmithing that would damage the device.
Q: Can I shoot .223 Remington?
A: Yes, 5.56 NATO chambers are designed to safely fire .223 Remington. Always use reputable ammunition and follow the manufacturer’s guidance.
Q: What magazine type does it use?
A: Standard AR-15 STANAG pattern 5.56 magazines. One 30-round mag is included (where legal).
Q: Is the Cerakote durable?
A: Cerakote® Armor Black is a high-performance ceramic coating known for excellent abrasion and chemical resistance.
SEO-Rich Highlights & Buyer Keywords
CMMG RESOLUTE Mk4 5.56 NATO
14.5" pinned & welded (16" OAL) AR-15 rifle
Cerakote Armor Black semi-automatic carbine
Includes one 30-round magazine (where legal)
Model 55A060B-AB / 55A060BAB, UPC 810103479678
Free-float handguard, AR-15 compatible, M-LOK® ready
Meta Title (SEO)
CMMG RESOLUTE Mk4 5.56 NATO — 14.5" Pinned (16" OAL), Cerakote Armor Black, 30-Round Mag | 55A060B-AB / 55A060BAB
Meta Description (SEO)
Shop the CMMG RESOLUTE Mk4 in 5.56 NATO with a 14.5" pinned & welded barrel (16" OAL), Cerakote Armor Black finish, free-float handguard, and one 30-round magazine. Model 55A060B-AB / 55A060BAB, UPC 810103479678.
Structured Data (Product Schema JSON-LD)
Responsible Use Reminder
Follow all local, state, and federal laws regarding firearm purchase, possession, and magazine capacity. Confirm torque values and optic mounts, verify function with your chosen ammunition, and practice safe handling and secure storage at all times.
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