New for 2021: CMMG Mk9 Radial Delayed Blowback

by
posted on March 18, 2021
cmmg-inc-mk9-pistol-caliber-carbine-radial-delayed-f.jpg
CMMG built its business by offering quality, dependable pistol-caliber carbines, and the company has now come full-circle by updating its oldest model, the Mk9, with the revolutionary Radial Delayed Blowback operating system.

Traditionally, pistol-caliber carbines have incorporated a direct-blowback operating system. While this offers a simple, trouble-free mechanism, blowback operation as applied to 9 mm and other larger calibers comes with a host of assorted issues. Bolts have to be heavier to prevent early opening of the breech, which makes these PCCs heavier, and when the action begins reciprocating, that heavy bolt contributes to greater felt recoil and increased wear in the firearm.

CMMG's Radial Delayed Blowback operating system offered a new way to safely operate a pistol-caliber platform while eliminating some of the drawbacks found in a simple direct-blowback action. The bolt on CMMG's system angular locking lugs that prevent the bolt from unlocking until chamber pressures drop to a safe level. This system still operates on the principle of direct pressure applied from the chamber rather than a gas system, but the locking lugs and delayed opening allows for the use of a lighter bolt, thereby lightening the gun and reducing felt recoil.

CMMG's Mk9 pistol-caliber platform is the latest design in the company's lineup to incorporate the Radial Delayed Blowback system. These Mk9 platforms are available in Banshee and Resolute options. The Banshee is outfitted as a non-NFA pistol or a short-barreled rifle with barrel lengths of 5" or 8", while the Resolute is offered as a carbine with a 16" barrel. Both guns are designed to feed from Colt SMG-pattern 9 mm magazines and feature last-round bolt hold-open.

Suggested retail pricing on the guns start at $1,099.95. For more information, visit cmmg.com.

Latest

Revolutionary Art Of Don Troiani
Revolutionary Art Of Don Troiani

The Revolutionary Art Of Don Troiani

By using surviving artifacts, eyewitness testimony, accurately reproduced uniforms, original firearms and the thorough study of battle sites, Don Troiani has done more than imagine what happened 250 years ago. His art is as close as it can get to a true representation of what period combat would have looked like.

The Armed Citizen® April 21, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Captain John Parker's Fowler: Witness To History

While thousands of firearms were used in and around the Massachusetts towns of Lexington and Concord on April 19, 1775, few survive today. One survivor is the flintlock fowler used by Capt. John Parker of the Lexington militia.

New For 2025: Mossberg 590M Standoff & 500 Slugster Pump Shotguns

The Mossberg 500 is one of the most popular pump-action shotguns ever made. That doesn’t keep the company from making updates and improvements, as evidenced in the new-for-2025 590M Standoff and 500 Slugster series.

Preview: Warthog Sharpeners V-Sharp Elite A4

Warthog USA’s V-Sharp Elite A4 pairs the company’s most feature-packed portable blade-sharpening unit with a detachable wooden base for added stability.

The Men & Guns Of Lexington Green

On April 19, 1775, 250 years ago, approximately 80 armed militiamen from Lexington gathered on their village green to confront several hundred British infantrymen. The events of that morning began a conflict that would ultimately establish the United States of America.

Interests



Get the best of American Rifleman delivered to your inbox.