Product Preview: CMMG 9 AR Conversion Adapters

by
posted on October 29, 2019
** 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-9-arc-adapters.jpg

AR-style pistol-caliber carbines chambered for 9 mm Luger typically require the use of a dedicated 9 mm lower receiver, but CMMG’s 9 AR Conversion (9 ARC) Magazines remove that requirement by allowing any unmodified AR-15 lower to function with the company’s Radial Delayed Blowback 9 mm Luger upper receivers. And taking the versatility of the system even further, CMMG’s 9 AR Conversion Adapters allow any standard (.223 Rem.) 30-round Gen 2 or Gen 3 Magpul PMAGs to be temporarily altered for 9 ARC compatibility. Just remove the magazine’s baseplate retainer and spring, insert the CMMG adapter, compress the spring and slide the factory baseplate back into place. Capable of up to a full 30 rounds of ammunition, the adapters can also be modified to limit capacity to either 10, 15 or 20 rounds. These adapters are available for $30 each, or $80 for a pack of three. For more information, please visit cmmginc.com.

Additional Reading:
NRA Gun of the Week: CMMG Resolute 300 MK4 Rifle
NRA Gun of the Week: CMMG Mk57 Banshee
Product Preview: CMMG RipStock Buttstock Assembly
Tested: CMMG MK4 Banshee .22 LR Pistol

Latest

SAAMI approves 25 Win. RPM and 8.6 BLK
SAAMI approves 25 Win. RPM and 8.6 BLK

SAAMI Accepts and Standardizes Two New Cartridges

Both 8.6 Blackout and .25 Winchester RPM are now SAAMI-approved cartridges.

Preview: Inforce ARC 650 LR-M

Measuring 5.6 inches long with a 1.4-inch bezel, the Inforce 650 LR-M is built for hard use within a 6061-T6 aluminum body that is then Type III hardcoat anodized for added durability and abrasion resistance.

A vz. 61 Skorpion For Less: The Titus Arms TA61

This TA61 version of the famous Czech vz. 61 Skorpion is affordably priced, thanks to a polymer lower receiver developed by Titus Arms.

New for 2026: Inglis Manufacturing 2035 Pistol

Inglis Manufacturing has introduced the 2035, its updated take on the storied Hi Power.

I Carry: Smith & Wesson Model 432 UC Revolver in a DeSantis Holster

In this week's episode of "I Carry," we have a Smith & Wesson Model 432 UC revolver carried in a DeSantis Holsters Super Fly pocket holster along with a Cold Steel Frenzy pocket knife.

The Armed Citizen® Feb. 13, 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.