CMMG Banshee MkG Pistol, .45 ACP, 8-Inch, Midnight Bronze

The CMMG Banshee MkG (CMMG part no. 45A890F-MB) is chambered in .45 ACP, the cartridge that won two World Wars and inspired CMMG’s own Radial Delayed Blowback system. Built on the MkG platform, this Banshee is designed around Glock-pattern .45 ACP magazines, feeding a proven, widely available source of ammunition capacity. Full-length M-LOK slots run down both sides and the bottom of the handguard, with additional M-LOK sections between the top Picatinny rail segments for flexible accessory mounting. The Radial Delayed Blowback system delivers softer recoil impulses and a lighter bolt carrier group than a traditional straight blowback design, and this Banshee is finished in CMMG‘s midnight bronze Cerakote.

Key Specifications

• Chambered in .45 ACP, a proven, hard-hitting cartridge with over a century of service history.
• Runs an 8-inch barrel for solid velocity retention in a compact package.
• Holds 13 rounds per magazine using Glock-pattern .45 ACP magazines.
• Includes 1 magazine in the box so you’re ready to load and go.
• Cycles off CMMG’s Radial Delayed Blowback operating system for a softer recoil impulse and lighter bolt carrier group.
• Wears a full-length M-LOK handguard with mounting slots on both sides, the bottom, and between the top rail sections.
• Overall length measures 40.3 inches, keeping the package manageable for its caliber.
• Equipped with CMMG’s Zeroed 60/90-degree safety for a shorter, faster selector throw.
• Ships optics-ready with no fixed sights, leaving the top rail open for a red dot.
• Finished in midnight bronze Cerakote for a distinctive look and added corrosion resistance.

Frequently Asked Questions

What magazines does the MkG Banshee use? It uses Glock-pattern .45 ACP magazines, holding 13 rounds each.

What is Radial Delayed Blowback? It’s CMMG’s operating system that delivers softer recoil and a lighter bolt carrier group than a traditional straight blowback design.

Is this pistol optics-ready? Yes, it ships with no fixed sights so you can mount an optic directly to the top rail.

Buy the CMMG Banshee MkG Pistol, .45 ACP, 8-Inch, Midnight Bronze

The MkG Banshee brings a time-tested defensive cartridge into a modern AR pistol platform, all while keeping magazine costs low thanks to Glock-pattern compatibility. Order it from our AR pistols lineup at our Lubbock, Texas gun shop for fast, insured shipping to your FFL.