CMMG Banshee 300 MKG Pistol 45 ACP 5″ Barrel 13-Round

The CMMG Banshee MKG Pistol is a hard-hitting .45 ACP powerhouse built around a 5 inch barrel and a 13-round magazine. Engineered for maximum performance in a compact package, this Banshee 300 MKG delivers potent stopping power with the reliability and accuracy CMMG is known for. Whether you are a seasoned shooter or buying your first pistol-caliber platform, this one sets a high standard and backs it up on the range.

What the CMMG Banshee MKG Pistol Is For

The Banshee line is CMMG’s compact, ultra-maneuverable pistol-caliber platform, and the MKG version is chambered in .45 ACP for shooters who want big-bore authority. That makes it a strong choice for home defense and tactical use, where a short, controllable firearm with serious punch has clear advantages over a full-length rifle.

With a 5 inch barrel and a 13-round capacity, the CMMG Banshee MKG Pistol keeps the whole package short and nimble while still feeding a healthy load of .45 ACP. It is built for close-quarters confidence without feeling clumsy in the hands, and it swings quickly from target to target.

Features That Set the CMMG Banshee MKG Pistol Apart

• Chambered in .45 ACP for potent, proven, hard-hitting stopping power
• Compact 5 inch barrel that keeps the pistol short and quick to maneuver indoors
• 13-round magazine capacity for a strong on-board load of big-bore ammunition
• Banshee 300 series design engineered for reliability round after round
• Built for both self-defense and tactical applications in tight spaces
• CMMG engineering focused on accuracy and consistent, repeatable performance

Specifications Woven Into the Build

The 5 inch barrel is long enough to make the most of the .45 ACP cartridge while keeping the overall footprint tight and easy to swing indoors. Thirteen rounds of .45 on board strikes a smart balance between firepower and a manageable magazine size, so the pistol stays compact right where it counts and never feels top-heavy.

The Banshee platform is designed to run reliably and shoot accurately, which is the whole point of a defensive firearm. CMMG built the 300 MKG to guarantee dependable function while delivering the potent performance the .45 ACP is famous for, giving you confidence in a serious caliber.

Practical Use, Care, and Compatibility

The CMMG Banshee MKG Pistol is easy to maintain: clean the bolt group and chamber after shooting, keep the action lubricated, and feed it quality .45 ACP for the most consistent cycling. As a pistol-caliber platform, it makes an excellent range gun and a serious home-defense option rolled into one, which is a lot of value in a single firearm.

Learn more about the maker at CMMG, and when you want to compare big-bore options, browse our full firearms collection to see where it fits your plans.

For a compact .45 ACP platform that brings real stopping power and CMMG reliability, the Banshee 300 MKG is a standout. Like every firearm, it ships to your local licensed dealer for transfer after your background check.