Cmmg Banshee 40A330Fab Mkgs 40 8 Brc Arblk

The CMMG Banshee 40 in .40 S&W is a purpose-built pistol-caliber carbine that brings serious stopping power to close-quarters work, home defense, and the range. Built on CMMG's proven MkGs platform, this 8-inch barreled rifle trades nothing in capability despite its compact profile. The radial delayed blowback system cycles .40 S&W with authority, delivering the ballistic advantage of a rifle while maintaining the ergonomics and magazine compatibility shooters already know—it runs standard Glock-pattern magazines in the .40 S&W caliber, making ammunition and spare mags easy to source.

Compact doesn't mean stripped-down. The Banshee 40 comes equipped with professional-grade internals: a ZEROED drop-in trigger for clean breaks, an ambidextrous charging handle for either-hand operation, and a 60/90-degree safety selector that works intuitively whether you're shouldering it or running it with the RipBrace. The billet upper and forged lower receivers are finished in Cerakote for a durable, professional appearance, while the CMMG EML7 M-LOK handguard gives you real estate for lights, lasers, or vertical grips. A linear compensator (threaded 0.578 x 28) minimizes blast without relying on a folding brace to manage recoil.

At just 23.8 inches long and 5.3 pounds, the Banshee 40 fits tight workspaces—vehicles, safes, shallow closets—without sacrificing shootability. Whether you're building a truck gun, a home-defense backup, or a distinct training platform that leverages your service or duty weapon's manual of arms, the MkGs Banshee in .40 S&W is built to perform.

Key Features

• Radial delayed blowback system optimized for .40 S&W performance
• Glock-pattern magazine compatibility (22-round capacity available)
• 8-inch barrel with 1:16 twist rate
• Ambidextrous charging handle and safety selector (60/90 degree)
• ZEROED drop-in trigger for improved control and follow-up shots
• M-LOK handguard for mounting lights, lasers, or accessories
• CMMG ZEROED linear compensator for reduced muzzle signature
• Cerakote finish for durability in varied environments
• RipBrace included for stability and control
• Compact 23.8-inch length; ideal for vehicles and close-quarters applications

Specifications

Frequently Asked Questions

What magazines does the Banshee 40 MkGs use?

The Banshee 40 accepts small-frame Glock-pattern magazines in .40 S&W. Magazines must match the caliber of your upper group (in this case, .40 S&W), and the platform supports up to 22-round capacity.

Is the Banshee 40 good for home defense or truck guns?

Yes. At 23.8 inches and 5.3 pounds, the Banshee 40 is compact enough for vehicles, safes, and tight spaces while delivering rifle-caliber handling and ballistic performance. The radial delayed blowback system is reliable in .40 S&W, and the ambidextrous controls and drop-in trigger support defensive shooting.

What comes with the Banshee 40 MkGs?

The rifle includes the CMMG RipBrace, CMMG ZEROED linear compensator, ambidextrous charging handle, drop-in trigger, and all standard furniture as listed in the specifications.

Can I suppress or modify the muzzle device?

The Banshee 40 features a CMMG ZEROED linear compensator with a 0.578 x 28 thread pitch. Suppressors or other muzzle devices with this thread pitch are compatible, subject to local laws and regulations.