Rifle, Resolute 300, Mk9, 9mm Radial Delayed Blowback™

As CMMG’s oldest 9mm platform, the Mk9 is continuing to go through changes to become even better than before. Introducing, the new and improved Mk9, now utilizing CMMG’s patented Radial Delayed Blowback™ operating system. Radial Delayed Blowback guarantees less felt recoil for the shooter, offering a more enjoyable shooting experience.  Our Mk9 platform is designed to use Colt SMG-style magazines and is offered in both BANSHEE and RESOLUTE configurations.    

If you want the best an AR has to offer, then the 300 Series is your choice. This AR is fitted with every desired feature including a choice of 10 Premier Cerakote colors, laser engraved model name on the lower receiver, updated ambidextrous controls and sling points along with a premium trigger, Magpul grip, CMMG RIPSTOCK, and CMMG SV muzzle brake. These are just a few of the possible upgrades on this series. Chambered in 9mm, this AR is ready for the range. 

CMMG’s RESOLUTE rifle and carbine lineup is engineered with purpose for those who refuse to compromise on quality. Each RESOLUTE rifle is designed for balance, accuracy and maneuverability. Available in three tiers —RESOLUTE 100, RESOLUTE 200 and RESOLUTE 300 — that cater to your intended needs and customization. Whether you’re defending your family or looking to bring out your best at the range, the RESOLUTE keeps going when you need it most.

CMMG has made a small modification to 9mm barrels in order for them to be compatible with Mk9 lower receivers. This modification only applies to Mk9 platform lower receivers and does not positively or negatively affect functionality of the barrel with a MkGs, Mk4 or Mk17 platform lower receiver. Barrels that are stamped “9mm Luger” will be compatible with an upgraded Mk9 lower receiver. If your barrel is marked “9×19 NATO”, you will need to purchase a new 9mm barrel in order to ensure reliable function.

All CMMG products come with our Lifetime Quality Guarantee