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

Weatherby 307 New Models F
Weatherby 307 New Models F

New For 2025: Weatherby Model 307 Range XP 2.0 & Alpine ST Rifles

Weatherby's Model 307 bolt-action rifle opens up a world of aftermarket components to consumers, thanks to its Model 700 receiver footprint, and the company now has two new models for hunters and sport shooters.

Preview: Thunderbolt To The Rebels | The United States Sharpshooters In The Civil War

Author Darin Wipperman provides a tantalizing glimpse into the world of Berdan’s sharpshooters during the American Civil War.

Gun Of The Week: Rock River Arms LAR-22 Tactical Carbine

This week, we're on the range with the Rock River Arms LAR-22 Tactical Carbine, a rimfire variant of the AR-15 that's designed for reliability and gives enthusiasts a way to shoot affordably.

The Armed Citizen® July 11, 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.

Japanese Last-Ditch Small Arms Of World War II

The crude assortment of fighting tools used by the Japanese during World War II give clues of an unprepared and unmatched last-ditch fight that ultimately lead to Allied victory.

Federal Ammunition Awards 2025 Tom Knapp Memorial Scholarships

Federal Ammunition recently awarded the 2025 Tom Knapp Memorial Scholarships to two 4-H shooting sports teen ambassadors.

Interests



Get the best of American Rifleman delivered to your inbox.