CMMG 28B940CMB DISSENT MK4 22ARC 16.1 MDBRZ. 1 MDBRZ - Specifications for CMMG 28B940CMB DISSENT MK4 22ARC 16.1 MDBRZ: Manufacturer: CMMG Magazine Included: No CMMG 28B940CMB DISSENT MK4 22ARC 16.1 MDBRZ