Grand Master Joseph Kirchner has developed a style of martial arts that is sanctioned by the North American Karate Association. Named the Master K System, it consists of a combination of the most effective techniques taken from a variety of disciplines he's studied since 1958: 7th Dan Master Tang Soo Do, 6th Dan Master Kenpo 4th Dan Judo/Ju Jitsu, 2nd Dan Chung Fa Kung Fu, Brown Belt Hap Ki Do, 30 Years experience Ai Ki Do, and 50+ years Boxing. The Master K System does not include every technique from each style, but rather only the techniques which are most effective in a real life situation. As in any style of self defense, there are strengths and weaknesses. The System draws from the strengths of each art while disregarding the weaknesses. The result is an exceptionally effective reality-based system of self defense which is sanctioned by the North American Karate Association.