Overview
The CMMG Banshee MK57 redefines compact weapon system performance, integrating the effective 5.7x28mm cartridge into a robust AR pistol platform. Engineered for precision and operational reliability, this system utilizes CMMG’s proprietary Radial Delayed Blowback operating system to mitigate recoil and optimize cycling. Designed to accept readily available FN Five-seveN pattern magazines, the Banshee MK57 offers significant cross-platform compatibility and simplifies logistics for the discerning operator.
Key Features
Advanced Operating System
- **Radial Delayed Blowback:** CMMG’s patented operating system reduces felt recoil and enhances weapon reliability, ensuring consistent performance with the 5.7x28mm cartridge. This system optimizes gas flow and bolt timing for a smoother firing impulse compared to traditional blowback designs.
Ergonomics and Modularity
- **MK57 Platform Integration:** Specifically designed to accept FN Five-seveN pattern magazines, ensuring broad compatibility. An intuitive, oversized magazine release facilitates rapid reloads and positive manipulation.
- **EML 7″ M-LOK Handguards:** Features full-length M-LOK slots on the sides and bottom, alongside M-LOK interface points between the top Picatinny rail sections. This design provides extensive accessory mounting options while maintaining a streamlined profile.
- **CMMG ZEROED Components:** A comprehensive suite of ZEROED parts is integrated for enhanced user interface and control, including:
- ZEROED Pistol Grip
- ZEROED Drop-In Trigger
- ZEROED 60/90 Degree Ambidextrous Safety Selector
- ZEROED Linear Compensator (9mm, optimized for sound redirection)
- ZEROED AR15 Ambidextrous Charging Handle
- ZEROED Bolt Catch
- ZEROED Polymer Dust Cover
Construction and Finish
- **Receiver:** Precision-machined aluminum receiver, finished with Black Armor Cerakote for enhanced durability and corrosion resistance. Integrates a full-length Picatinny rail for optics and sighting systems.
- **Barrel:** 8-inch medium taper threaded barrel, treated with Black Nitride for superior wear resistance and extended service life. The threaded muzzle allows for direct attachment of suppressors or muzzle devices.
Technical Specifications
- **Caliber:** 5.7x28mm
- **Operating System:** Radial Delayed Blowback
- **Barrel Length:** 8 inches
- **Barrel Material/Finish:** Black Nitride, Medium Taper, Threaded
- **Receiver Material/Finish:** Aluminum, Black Armor Cerakote, Picatinny Rail
- **Handguard:** EML 7″ M-LOK
- **Magazine Compatibility:** FN Five-seveN pattern magazines
- **Included Magazine:** (1) 20-Round ProMag magazine
- **Trigger:** CMMG ZEROED Drop-In Trigger
- **Safety:** CMMG ZEROED 60/90 Degree Ambidextrous Safety
- **Muzzle Device:** CMMG ZEROED Linear Compensator (9mm)
- **Charging Handle:** CMMG ZEROED AR15 Ambidextrous Charging Handle
- **Grip:** CMMG ZEROED Pistol Grip
- **Dust Cover:** CMMG ZEROED Polymer Dust Cover
- **SKU:** TSW|166435









