CMMG BANSHEE Mk4/Mk9/Mk17 9mm Upper Group 8"
CMMG's BANSHEE 9mm upper delivers carbine ballistics in a compact package. Features radial delayed blowback, 8" barrel, ZEROED linear compensator, and M-LOK handguard. Complete with bolt carrier group.
Fits: CMMG Mk17, CMMG Mk4, CMMG Mk9
The CMMG BANSHEE 9mm Upper: Compact Power Meets Precision
The BANSHEE upper group represents a thoughtful solution for shooters seeking genuine carbine-class ballistic performance in a genuinely compact platform. This 8-inch upper combines CMMG's proven radial delayed blowback operating system with quality components throughout.
Key Features
- Radial Delayed Blowback System: CMMG's proprietary operating system delivers reliable function and manageable recoil impulse
- Compact 8" Barrel: Maintains velocity and energy while keeping overall length practical for close-quarters work
- Complete Upper Assembly: Arrives with bolt carrier group and ZEROED accessories—ready to pair with compatible lower receivers
- Quality Construction: Billet 6061-T6 aluminum upper receiver with 4140CM steel barrel
- Practical Ergonomics: ZEROED ambidextrous charging handle and CMMG EML7 M-LOK handguard for accessory mounting
- Muzzle Management: ZEROED linear compensator (1/2 x 28 threads) directs gases forward, minimizing side blast
Compatibility
Designed to work with CMMG MkGs, Mk17, or mil-spec AR15 lower receivers when paired with CMMG 9mm conversion magazines. This flexibility allows you to build or upgrade your platform to suit your needs.
Specifications
- Caliber: 9mm Luger
- Barrel Length: 8 inches
- Barrel Twist: 1:10
- Weight: 3.0 lbs
- Overall Length: 16.5 inches
- Finish: Cerakote (Armor Black)
Whether you're building a dedicated 9mm platform or upgrading an existing system, this upper group delivers the performance and reliability serious shooters expect.
