The CMMG Dissent 28B940CMB is an AR-15 upper marketed for use with the 22 ARC cartridge, featuring a 16.10in barrel length and construction in 6061-T6 aluminum. It is presented as an upper component for AR-15 platform rifles and is intended for precision, target, and varmint applications where the 22 ARC cartridge is desired. The assembly details provided are limited to the manufacturer name, model designation, caliber, barrel length, and material.
Key Specifications
- Brand: CMMG.
- Model: Dissent 28B940CMB.
- Caliber: 22 ARC.
- Barrel length: 16.10 inches.
- Material: 6061-T6 aluminum.
- Category: AR15 Upper.
- Marketed as an upper assembly: upper receiver component for AR-15 platforms.
This upper aligns with shooters who prioritize a lightweight aluminum construction combined with the ballistic characteristics of the 22 ARC cartridge. Its specification set makes it a practical option for precision-oriented outings and small-game/varmint work where the 22 ARC is appropriate. Review compatibility and component inclusion with your receiver and intended use before installation.





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