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

Trend Raw Material 1
Trend Raw Material 1

Gun Industry Holding The Line As Raw Material Prices Skyrocket

Inflation is passed along and used as an excuse by many industries to increase profit margins. Gun and ammunition firms, on the other hand, have been bucking that trend for decades.

Preview: Air Venturi RovAir 4500 Portable Compressor

Pre-charged pneumatic guns require a continual supply of high-volume air to maintain their capability on the range and in the field, which is where Air Venturi steps in with its RovAir portable compressor.

Beretta Celebrates Marine 250th With A300 Ultima Patrol Raider

In honor of the U.S. Marine Corps' 250th anniversary, Beretta has released a special A300 Ultima Patrol Raider shotgun, complete with World War II Marine Raider camouflage and the ability to mount a bayonet.

Preview: Foxtrot Woobie Tanker Jacket

The Woobie Tanker Jacket from Zero Foxtrot is a stylized modern cross between the World War II-era Winter Combat Jacket and the Liner, Wet Weather Poncho more commonly called the “woobie.”

Gun Of The Week: Sarsilmaz SAR9 SC Gen3

As part of a new family of guns, SAR USA offers its SAR9 SC Gen3, a small, subcompact, striker-fired design made for daily carry. Watch our video to see this concealable pistol in use on the range.

The Armed Citizen® Nov. 7, 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.

Interests



Get the best of American Rifleman delivered to your inbox.