The CMMG Banshee MkGs (CMMG part no. 40ABC0FAB) is chambered in .40 S&W, a cartridge that blends the best traits of 9mm and 10mm into one hard-hitting round. Built on CMMG’s MkGs platform, this ultra-compact Banshee runs a 5-inch barrel and feeds off Glock-pattern .40 S&W magazines, so shooters already invested in Glock magazines will have plenty of compatible options on hand. The MkGs platform’s Radial Delayed Blowback operating system softens recoil compared to a straight blowback design while keeping the bolt carrier group light. Finished in CMMG‘s armor black, it’s a compact, easy-to-run personal-defense pistol or range gun you won’t want to put down.

Key Specifications

• Chambered in .40 S&W, a cartridge that blends 9mm-like capacity with 10mm-like power.
• Runs an ultra-compact 5-inch barrel for maximum maneuverability.
• Cycles off CMMG’s Radial Delayed Blowback operating system for a softer recoil impulse.
• Compatible with Glock-pattern .40 S&W magazines, holding 22 rounds each.
• Wears a CMMG EML4 M-LOK handguard for a full-length accessory mounting surface.
• Includes CMMG’s RipBrace for a stable, adjustable shooting platform.
• Weighs approximately 4.9 pounds unloaded, keeping the package light and easy to carry.

Frequently Asked Questions

What magazines does the MkGs Banshee use? It runs Glock-pattern .40 S&W magazines for wide availability and low cost.

What makes .40 S&W a good choice for this platform? It blends 9mm-like capacity with much of 10mm’s stopping power in one cartridge.

Does it come with a brace? Yes, CMMG’s RipBrace ships installed for a stable shooting platform.

Buy the CMMG Banshee MkGs Pistol, .40 S&W, 5-Inch, Armor Black

This MkGs Banshee gives .40 S&W fans a purpose-built AR pistol that’s compact enough for close-quarters use and easy to feed off Glock magazines you may already own. Order it from our AR pistols lineup at our Lubbock, Texas gun shop for fast, insured shipping to your FFL.