NRA Gun of the Week: CMMG Mk57 Banshee

by
posted on November 17, 2018
Most who know the 5.7x28 mm cartridge don’t know that CMMG Inc., a U.S. manufacturer, is chambering an AR-pistol to operate the Belgian-designed “Five-Seven” cartridge. The Mk57 Banshee pistol, featured here, operates different than the typical Stoner, gas-operated design. This Slate Gray-Cerakoted, 4 1/2-lb. pistol, built from both forged and billet aluminum, utilizes a delayed form of cartridge blowback termed "radial-delayed" by the manufacturer. To find out more, watch this week's NRA Gun of the Week video hosted by Kelly Young.

Specifications:
Model: Mk57 Banshee
Manufacturer: CMMG Inc.
Chambering: 5.7x28 mm
Action Type: radial-delayed, blowback-operated center-fire pistol
Lower Receiver: 7075-T6 billet aluminum
Upper Receiver: 7075-T6 forged aluminum
Barrel: 5”; threaded 1/2x28 TPI, includes thread protector
Trigger: 5-lb, 7-oz. pull
Finish: Cerakote, Slate Gray
Magazine: 20-round detachable box
Weight: 4 lbs., 9 ozs.
MSRP: $1,550


Additional Reading:
SHOT Show 2018: CMMG Mk4 DTR2 .224 Valkyrie Rifle
Tested: CMMG MK4 Banshee .22 LR Pistol
Tested: CMMG Guard Pistol Caliber Carbines
Tested: CMMG MkW-15 XBE Anvil











 





Latest

Fn Americana 545 Tactical Giveaway
Fn Americana 545 Tactical Giveaway

The Great FN Gun Giveaway At NRAAM 2025

Here’s a chance to win a custom, one-of-a-kind FN 545 Tactical pistol at the 154th NRA Annual Meeting & Exhibits, April 24-27, in Atlanta, Ga. No purchase necessary.

Training With Moving Targets

Most target shooters understand static or bullseye-type stationary targets quite well, but did you know that adding motion into your training routine will improve practical marksmanship and the skills necessary to conquer defensive situations?

USA Shooting Celebrates 30th Anniversary

USA Shooting marks a historic milestone in April as it celebrates 30 years as the national governing body for international shooting sports within the U.S. Olympic and Paralympic Committee.

Rifleman Review: Rock River Arms LAR-15M .17 HMR

Building a reliable semi-automatic rifle chambered for the .17 HMR can be a challenge, but Rock River Arms seems to have solved the issue with its unique RRA .17 HMR AR-style rifle.

New For 2025: Tanfoglio Hexagon Tactical & Hexagon P

Tanfoglio manufactures CZ 75 pattern pistols in a variety of forms, and for 2025, the company is adding two new variants to its lineup with the Hexagon Tactical and Hexagon P.

See New Guns & Gear At The NRA's Annual Meetings In Georgia

Freedom-loving American patriots gather every spring at the NRA Annual Meetings & Exhibits to celebrate their liberty and check out the newest crop of guns, optics, ammunition and accessories. This year, 2025, the fun will take place in Atlanta, Ga.—we hope to see you there!

Interests



Get the best of American Rifleman delivered to your inbox.