CMMG Banshee MK4 .22LR Upper Group 4.5" Barrel
CMMG Banshee MK4 upper group in .22LR with 4.5" barrel and M-LOK handguard. Complete with bolt carrier group, dust cover, ambidextrous charging handle, and flash hider. Works with standard AR15 lowers.
Fits: AR15
The CMMG Banshee MK4 .22LR Upper Group
Why build a .22LR that merely looks like an AR? Build an AR that happens to be chambered in .22LR. That's the philosophy behind CMMG's Banshee platform.
Design and Compatibility
This upper group is built on the proven MK4 platform and designed to function with any standard AR15 lower receiver. It accepts CMMG's .22 AR Conversion Magazines, giving you genuine AR ergonomics and controls in a rimfire package.
Specifications
- Caliber: .22LR
- Barrel Length: 4.5" (the shortest CMMG offers in any caliber)
- Finish: Armor Black
- Handguard: M-LOK Free-Float design for accessory mounting
- Includes: Bolt carrier group and complete ZEROED accessory package
What's Included
Every Banshee upper comes fully assembled and ready to mount:
- ZEROED AR15 Polymer Dust Cover
- ZEROED .22LR Ambidextrous Charging Handle
- ZEROED .22LR Flash Hider
- Bolt Carrier Group
Why Choose the Banshee MK4
The compact 4.5" barrel makes this upper ideal for shooters seeking a lightweight, maneuverable platform perfect for training, plinking, or introducing new shooters to the AR platform. The free-float handguard ensures consistent accuracy while the M-LOK slots accept modern tactical accessories.
