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

Smith Wesson Fpc Rifleman Review 1
Smith Wesson Fpc Rifleman Review 1

With its FPC, the Folding Pistol-caliber Carbine, Smith & Wesson entered the PCC market in a big way.

7 New Over-Under Shotguns for 2026

Ever since the development of the iconic Browning Superposed shotgun in the early 1930s, the concept of an over-under shotgun has remained popular not just with American shooters but shotgunners the world over.

DOJ Sues Denver Over Unconstitutional Bans

The Department of Justice (DOJ) has filed suit against the city of Denver, Colo., for banning “certain constitutionally protected semi-automatic rifles."

Take a Safe Queen to the Range

With few exceptions, there’s no reason not to shoot your classic firearm periodically.

9 New 1911s & 2011s for 2026

There is a host of new 1911s and 2011s available to today's handgun enthusiasts, with each design bringing a unique feature set to the table.

Wyoming Breaks Ground on State Shooting Sports Complex

Wyoming state officials were on hand at the groundbreaking ceremony for the state's new shooting complex, which is expected to open in mid-2027.

Interests



Get the best of American Rifleman delivered to your inbox.