cmmg CMMG Resolute 300, MK4, 5.56X45mm NATO, Bronze, 16.1"

cmmg CMMG Resolute 300, MK4, 5.56X45mm NATO, Bronze, 16.1"

In stock (1)


RESOLUTE, Mk4, 5.56X45MM NATO, 16.1"

When it comes to dimensions and the caliber, this is what comes to most people’s minds when you say AR15. This CMMG® RESOLUTE® comes chambered in 5.56x45mm, one of the most prolific calibers in the world, and for good reason. 5.56, and its counterpart .223 Rem, have seen service with militaries, hunters, and recreational shooters for decades.

Whether you’re considering your first rifle or picking a new addition, a 5.56 RESOLUTE carbine is a staple for any collection.

If you’re after a particular look or have a certain AR accessory that fits you best then don’t worry, this 5.56 RESOLUTE is built on our Mk4 platform and accepts virtually any and all AR15 accessories.

When full-size rifles are too cumbersome and pistols/SBRs don’t deliver the long-range ballistic performance you need, the CMMG RESOLUTE line of carbine length rifles is the answer. Fitted with the suite of ZEROED parts and accessories as well as our legendary RIPSTOCK, the RESOLUTE is the rifle that’s never out of place. The new EML™ 15 handguard brings style to the next level. M-LOK® attachment slots are found where expected at the 3, 6, and 9 o’clock positions as well as on top at 12 o’clock with the omission of a full-length Picatinny section found on our previous handguard. This reduces weight while the additional M-LOK section still gives shooters a place to mount those must have accessories. With a range of choices, just pick the caliber you need for the job and let your rifle do the talking.


Mk4 ZEROED parts and accessories – Quality comes standard

The AR15 platform is well known for its capability for customization but picking the right parts doesn’t have to be a nightmare of homework. CMMG’s ZEROED parts and accessories are made here in the USA with quality and attention to detail that is second to none and each RESOLUTE comes equipped with a slew of ZEROED parts standard, including:

ZEROED Pistol Grip

ZEROED Trigger Guard

ZEROED 60°/90° Ambi Safety

ZEROED AR15 Ambi Charging Handle

ZEROED Ambi Mag Catch

ZEROED Extended Mag Release Button

ZEROED AR15 Bolt Catch

ZEROED AR15 Polymer Dust Cover

ZEROED Muzzle Brake 5.56mm

**Note: Brass Deflector May Vary From Images On Mk4 Direct Impindgment Models**

Lifetime Quality Guarantee

CMMG aims to please, that’s why every CMMG product is backed by their Lifetime Quality Guarantee against material and workmanship defects. Contact CMMG for more information.

Not for sale in California

Important note about our photos
While we make every effort to ensure that our product photos are accurate, manufacturers occasionally change the design of components such as triggers, sights, or magazines without notice. Also, modifications to the firearm or component may be required in order to meet specific state compliance requirements. While we make every effort to accurately describe and illustrate the item you are going to receive, there may be visual differences on various components that do not affect functionality.

Federal law requires that you be 21 years of age or older to purchase a handgun, frame or receiver. To purchase a shotgun or rifle, you must be 18 years of age or older. 18 U.S.C. Section 922(b)(1).

As required by federal law, this item may only be shipped to a dealer with a valid Federal Firearms License. If you do not specify the name and shipping address of your dealer, your order will be delayed.  

California Residents
 WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to


CMMG Resolute 300, MK4, 5.56X45mm NATO, Bronze, 16.1"

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