CMMG 28B3D0CTNG ENDEAVOR MK4 22ARC 20 TUNG. CMMG 28B3D0CTNG ENDEAVOR MK4 22ARC 20 TUNG - Specifications for CMMG 28B3D0CTNG ENDEAVOR MK4 22ARC 20 TUNG: Manufacturer: CMMG Magazine Included: No CMMG 28B3D0CTNG ENDEAVOR MK4 22ARC 20 TUNG