CMMG’s New Banshee: it takes Sig P320 Mags!

The CMMG Banshee is a cool pistol caliber carbine style gun. Unlike most examples of the PCC (Pistol Caliber Carbine), it doesn’t rely on a straight blowback action, but a radial delayed blowback. The end result is a lighter recoiling PCC and a true soft shooter. The Banshee is unique in that way and this made it a popular choice for those looking for a compact-sized PDW. I took one to the task at SHOT Show and enjoyed the hell out of it. The Banshee is a real sweetheart. 

The Banshee PCCs traditionally used Glock magazines and could also utilize converted PMAGs. Well, now the Banshee is opening up its magazine well option to SIG P320 magazines. This seems to be a wise move with the P320 seemingly dominating the industry. Its adoption by the US Army spelled out its success and it’s only become more popular with police forces around the country. 

CMMG PCC that takes SIG P320 mags
The new Banshee (-sh) offering from CMMG is the MK17, a pistol caliber carbine that feeds on SIG P320 magazines (or M17 mags).

The SIG P320 or M17 magazines are available in a wide variety of capacities. This includes 17, 15, 10 rounders from SIG as well as 21 rounders. The CMMG Banshee comes with the 21 round model. ETS also produces some very affordable SIG P320 magazines with various capacities, including a 30-round model. This is another gun that seems to be posing the inevitable P320 takeover. 

CMMG Banshee Full Press Release Below

CMMG BANSHEE and RESOLUTE Accept Sig Sauer M17/P320 Magazines 

Boonville, MO – CMMG® spent years innovating the AR platform with the patented Radial Delayed Blowback operating system that has revolutionized the industry. The addition of the Mk17, chambered in 9mm, shows CMMG’s commitment to never settle. Accepting Sig Sauer M17/P320 magazines, the Mk17 is available in both BANSHEE and RESOLUTE configurations. Pair the BANSHEE or RESOLUTE with your existing M17/P320 and you have the convenience of magazine interchangeability.

Staying true to its innovative and industry-leading values, CMMG brings to market the Mk17 on the heels of the U.S. Army and Marine Corps adoption of the Sig Sauer M17/M18 service pistols. In November of 2019, Sig Sauer delivered its 100,000th M17/M18 handgun to the U.S. military and the number continues to rise. Those familiar with the platform now have a personal defense firearm (PDW) at their disposal. As hundreds of thousands of service members adopt a new pistol platform over the next 20-30 years, the CMMG Mk17 will be a great pairing to add to their arsenal.

The new PCC from CMMG takes SIG P320 mags.

For personal defense, the Mk17 is offered in the BANSHEE configuration of AR pistols and short-barreled rifles with various barrel lengths. For the competitive shooter, the Mk17 comes in CMMG’s RESOLUTE line of 16-inch barreled rifles.

The BANSHEE is offered as a pistol or short-barreled rifle with barrel lengths of 5 inches or 8 inches, while the RESOLUTE rifles comes with a 16-inch barrel. Both the BANSHEE and RESOLUTE feature Last Round Bolt Hold Open.

Each Mk17 ships with one 21-round magazine and a retail price ranging from $1,199.95 to $1,549.95 for the BANSHEE and $1,299.95 to $1,799.95 for the RESOLUTE (depending on series).

On all CMMG BANSHEE and RESOLUTE 300 Series firearms, consumers can choose from ten Cerakote colors at no additional cost. Both the 100 and 200 Series offer Cerakote for the complete firearm for an additional $150 per model.

Travis Pike is a former Marine Machine Gunner, a lifelong firearms enthusiast, and now a regular guy who likes to shoot, write, and find ways to combine the two. He holds an NRA certification as a Basic Pistol Instructor. is the world's Okayest firearm instructor, and a simplicisist when it comes to talking about himself in the 3rd person. Hit him up on Instagram, @travis.l.pike, with story ideas.

Sign Up for Newsletter

Let us know what topics you would be interested:
© 2022 GunMag Warehouse. All Rights Reserved.
Copy link