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CMMG
The CMMG Banshee MkGs in .40 S&W is a compact, purpose-built pistol-caliber firearm that bridges the gap between 9mm and 10mm performance. Built on CMMG's proven MkGs platform, this 5-inch barreled shooter delivers versatile power for defensive carry, duty use, or the range. The .40 S&W chambering gives shooters access to affordable factory ammunition and proven stopping performance in a package that's easy to train with and control. Weighing just 4.9 pounds and stretching 20.8 inches overall, the Banshee MkGs is compact enough for serious work but substantial enough to shoot straight and smooth.
What sets this Banshee apart is its practical, purpose-driven feature set. The radial delayed blowback operating system keeps things running clean and reliable, while the 1:16 barrel twist stabilizes a wide range of .40 S&W projectiles. The billet upper receiver and forged lower are both built from quality aluminum, and the Cerakote finish handles field use without fussing. You get an ambidextrous charging handle, integrated trigger guard, and a crisp CMMG ZEROED drop-in trigger that breaks predictably—no guessing, just shooting.
Magazine compatibility is straightforward: the Banshee MkGs accepts standard Glock 22-round .40 S&W mags, so feeding is never a problem. The CMMG RipBrace gives you options for how you want to configure it, and the M-LOK handguard accepts modern accessories without hassle. The ZEROED Linear Compensator (0.578x28 threads) works to mitigate muzzle rise and noise. The safety selector features both 60 and 90-degree positions, giving you the ergonomic choice you prefer.
Whether you're building a dedicated training gun, exploring the .40 S&W cartridge, or want a compact, controllable platform for personal defense, the Banshee MkGs delivers reliability and shootability without unnecessary complexity or bulk.
| Platform | CMMG MkGs |
| Caliber | .40 S&W |
| Operating System | Radial Delayed Blowback |
| Barrel Length | 5 inches |
| Barrel Twist | 1:16 |
| Barrel Contour | MT |
| Barrel Material | 4140CM SBN steel |
| Muzzle Device | CMMG ZEROED Linear Compensator |
| Muzzle Thread | 0.578 x 28 |
| Upper Receiver | Billet 6061-T6 Aluminum |
| Lower Receiver | MkGs Forged 7075-T6 Aluminum |
| Handguard | CMMG EML4 M-LOK |
| Charging Handle | CMMG ZEROED Ambidextrous |
| Pistol Grip | CMMG ZEROED |
| Buffer Type | Carbine |
| Receiver Extension | CMMG 6-Position Fastback |
| Brace | CMMG RipBrace |
| Trigger Type | ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Magazine | Glock 22-round .40 S&W compatible |
| Weight | 4.9 lbs |
| Overall Length | 20.8 inches |
| Finish | Cerakote Standard (Armor Black) |
The Banshee MkGs is compatible with standard Glock 22-round .40 S&W magazines, making ammo and magazine sourcing straightforward and affordable.
At 4.9 pounds and 20.8 inches overall with a 5-inch barrel, the Banshee MkGs is compact and handy. The .40 S&W caliber and reliable CMMG platform make it capable for defensive use, though final setup and configuration decisions are yours to make based on your legal and tactical needs.
Yes. The handguard features M-LOK slots, so you can mount lights, lasers, and other tactical accessories. The muzzle threads (0.578x28) also allow for suppressors or other muzzle devices.
The radial delayed blowback operating system used in the CMMG MkGs platform is designed to cycle reliably while managing recoil impulse smoothly. It requires no adjustment and delivers consistent performance across different ammunition loads.
It comes equipped with the CMMG RipBrace, which provides configuration flexibility depending on your intended use and local regulations.
CMMG
The CMMG Banshee MkGs in .40 S&W is a compact, purpose-built pistol-caliber firearm that bridges the gap between 9mm and 10mm performance. Built on CMMG's proven MkGs platform, this 5-inch barreled shooter delivers versatile power for defensive carry, duty use, or the range. The .40 S&W chambering gives shooters access to affordable factory ammunition and proven stopping performance in a package that's easy to train with and control. Weighing just 4.9 pounds and stretching 20.8 inches overall, the Banshee MkGs is compact enough for serious work but substantial enough to shoot straight and smooth.
What sets this Banshee apart is its practical, purpose-driven feature set. The radial delayed blowback operating system keeps things running clean and reliable, while the 1:16 barrel twist stabilizes a wide range of .40 S&W projectiles. The billet upper receiver and forged lower are both built from quality aluminum, and the Cerakote finish handles field use without fussing. You get an ambidextrous charging handle, integrated trigger guard, and a crisp CMMG ZEROED drop-in trigger that breaks predictably—no guessing, just shooting.
Magazine compatibility is straightforward: the Banshee MkGs accepts standard Glock 22-round .40 S&W mags, so feeding is never a problem. The CMMG RipBrace gives you options for how you want to configure it, and the M-LOK handguard accepts modern accessories without hassle. The ZEROED Linear Compensator (0.578x28 threads) works to mitigate muzzle rise and noise. The safety selector features both 60 and 90-degree positions, giving you the ergonomic choice you prefer.
Whether you're building a dedicated training gun, exploring the .40 S&W cartridge, or want a compact, controllable platform for personal defense, the Banshee MkGs delivers reliability and shootability without unnecessary complexity or bulk.
| Platform | CMMG MkGs |
| Caliber | .40 S&W |
| Operating System | Radial Delayed Blowback |
| Barrel Length | 5 inches |
| Barrel Twist | 1:16 |
| Barrel Contour | MT |
| Barrel Material | 4140CM SBN steel |
| Muzzle Device | CMMG ZEROED Linear Compensator |
| Muzzle Thread | 0.578 x 28 |
| Upper Receiver | Billet 6061-T6 Aluminum |
| Lower Receiver | MkGs Forged 7075-T6 Aluminum |
| Handguard | CMMG EML4 M-LOK |
| Charging Handle | CMMG ZEROED Ambidextrous |
| Pistol Grip | CMMG ZEROED |
| Buffer Type | Carbine |
| Receiver Extension | CMMG 6-Position Fastback |
| Brace | CMMG RipBrace |
| Trigger Type | ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Magazine | Glock 22-round .40 S&W compatible |
| Weight | 4.9 lbs |
| Overall Length | 20.8 inches |
| Finish | Cerakote Standard (Armor Black) |
The Banshee MkGs is compatible with standard Glock 22-round .40 S&W magazines, making ammo and magazine sourcing straightforward and affordable.
At 4.9 pounds and 20.8 inches overall with a 5-inch barrel, the Banshee MkGs is compact and handy. The .40 S&W caliber and reliable CMMG platform make it capable for defensive use, though final setup and configuration decisions are yours to make based on your legal and tactical needs.
Yes. The handguard features M-LOK slots, so you can mount lights, lasers, and other tactical accessories. The muzzle threads (0.578x28) also allow for suppressors or other muzzle devices.
The radial delayed blowback operating system used in the CMMG MkGs platform is designed to cycle reliably while managing recoil impulse smoothly. It requires no adjustment and delivers consistent performance across different ammunition loads.
It comes equipped with the CMMG RipBrace, which provides configuration flexibility depending on your intended use and local regulations.
