CMMG 28B3D0CTI ENDEAVOR MK4 22ARC 20 TTNM. CMMG 28B3D0CTI ENDEAVOR MK4 22ARC 20 TTNM - Specifications for CMMG 28B3D0CTI ENDEAVOR MK4 22ARC 20 TTNM: Manufacturer: CMMG Magazine Included: No CMMG 28B3D0CTI ENDEAVOR MK4 22ARC 20 TTNM