United States Marine Corps KA-BAR Fighting Knife MCMAP T-Shirt. Digitally Printed on soft superior 100% ring-spun Cotton, Triblend, 50/50 premium Soft Style Quality T-shirts. Not Slim Fit Size XXL is Heavy Cotton.  is a combat system developed by the United States Marine Corps to combine existing and new hand-to-hand and close quarters combat techniques with morale and team-building functions and instruction in the Warrior Ethos. The design consists of two crossed KA-BAR Fighting knife with the motto Certified Stacker since 1775 "Blood and Guts". The front of the design is the U.S. Flag, USMC Infantry since 1775, "mess with the best, die like the rest".