New for 2020: CMMG 5.7x28 mm AR Magazine and Conversion Kit

by
posted on January 21, 2020
** 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_lead.jpg

CMMG has released a 5.7 AR Conversion Magazine that holds 40 rounds of 5.7x28 mm. It fits and functions in a mil-spec AR-15 lower receiver when paired with the company’s 5.7x28 mm Radial Delayed Blowback upper receiver. The magazine and conversion allow shooters to enjoy the advantages of CMMG’s operating system, without surrendering the familiar location and feel of an AR-15's firearm controls.

The process of converting an AR-15 to shoot the pistol cartridge is simple and quick. First, attach a CMMG 5.7x28 mm Radial Delayed Blowback complete upper receiver to an existing AR-15 lower. Then insert the company’s new magazine and you’re ready to function test. The company recommends using a standards carbine buffer and action spring to reliably cycle the action in this configuration. The 5.7 AR Conversion Magazine also retains last-round bolt hold-open functionality.

Bullets leave a gun at high velocity with the small-caliber 5.7x28 mm cartridge, which makes it particularly appealing for personal-defense applications. It was developed in response to NATO’s request for a replacement for the 9 mm cartridge. CMMG’s patented Radial Delayed Blowback system of operation has quickly gained traction in pistol-caliber carbines, primarily due to reduction in perceived recoil when compared to that of traditional direct blowback designs.   

The company offers a complete line of firearms and upper receivers in its Banshee and Resolute lines that chamber the cartridge. Three different barrel lengths are available—5, 8 and 16 inches—and all employ the firm’s system of operation and new magazine. 

CMMG will also offer 5.7x28 mm bolt and barrel kits in 5-, 8- and 16-inch barrel lengths for gun builders. These kits will be compatible with the company’s Mk57 lower receivers, as well as Mk4/AR-15 lower receivers when used with the new CMMG 5.7 AR Conversion Magazines.

Latest

Ruger LCP Max Thumb Safety
Ruger LCP Max Thumb Safety

First Look: Ruger LCP Max With Thumb Safety

Add a little more peace of mind to a popular pocket pistol.

I Carry: Wilson Combat Division 77 Project 1 9mm Pistol in a Galco Holster

In this special Independence Day episode of "I Carry," we have the new Wilson Combat Division 77 Project 1 pistol carried in a Galco Concealable 2.0 Belt Holster along with a Galco SB& Fancy Stitched Belt and Double Magazine Carrier.

First Look: Viktos Counteract 15 CCW Backpack

Built from the ground up for everyday carry.

Ruger Acquires Anderson Manufacturing

Ruger will integrate Anderson’s capabilities into its broader operations.

Review: Sunshine Safety Emergency Medical Gear

Because there's more than one way to be your own first responder.

First Look: CMMG Zeroed Suppressors

CMMG extends the Zeroed line of accessories into the world of suppressors.

Interests



Get the best of Shooting Illustrated delivered to your inbox.