New for 2021: CMMG Mk9 Radial Delayed Blowback

by
posted on March 18, 2021
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
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

Colt Optics Riflescopes 01
Colt Optics Riflescopes 01

Pony Power: Colt Launches Optics Division with VMR Riflescopes

Colt Optics grew out of a market where military, law enforcement and civilian customers increasingly expect a firearms manufacturer to offer a complete package that goes beyond just the firearm

The Mysterious Mondragón: Mexico's Unique Self-Loading Military Rifle

Flawed in many ways, the Model 1908 Mondragón offered a preview of infantry rifles to come. And the circumstances of the Mondragón’s birth showed that not all firearm innovation comes from the hallowed halls of Springfield, Colt, Mauser or Enfield. 

Meet an Australian Visiting America to Warn Us

Australian political commentator Topher Field has come to America on its 250th birthday to speak and meet people and to bring the message that Australia’s gun confiscation should not be used as a template for the United States.

NRA-ILA’s John Commerford on What’s to Come for America’s Rifle

When the U.S. Supreme Court agreed to hear two cases—Grant v. Higgins and Viramontes v. Cook County, Illinois—that challenge bans on popular semi-automatic rifles in its next term, fear and trepidation ran like tremors through the public statements of anti-gun groups and the politicians they support.

Gun of the Week: GForce Arms LVR410

When it comes to the lever-action platforms, rifles abound, but the concept has been rarely applied to shotguns. Today, only a few makers offer lever-action shotguns, and one of those is GForce Arms and its LVR410.

The Armed Citizen® July 10, 2026

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

Interests



Get the best of American Rifleman delivered to your inbox.