If you're looking to augment your MMA with something a little different--and perhaps something a little "old school boxing" flavored--you might give some of these a try: This content is protected Called by many the greatest book on the mechanics of power punching ever written. Now out of print, it is available in quite a few places. Do a simple google search and you'll see what I mean. This content is protected Nifty little WWII combatives book, combines bits of boxing, jujitsu, and catch wrestling. Not exactly a complete system, but still an excellent work. "Paladin is pleased to present this rare reprint of a little-known hand-to-hand combat classic. At the outset of World War II, boxing heavyweight champion Jack Dempsey was appointed as a lieutenant in the U.S. Coast Guard and given the job of director of physical fitness. His orders: "Make 'em tough!" His task: to teach rookie Coast Guardsmen how to fight down and dirty in the face of the very real threat of enemy troops infiltrating American shores. Dempsey gives 18 fully illustrated lessons in the art of bashing and brawling on the battlefield, including Subduing an Armed Enemy, The Unbreakable Strangle, Beating the Punch, Hammering Your Way Out of a Stranglehold, The Belt Trick, Fooling the Smart Knife Man, Turning the Tables with a Bayonet and Breaking a Standoff. All students of nasty close-quarters combat in the tradition of Sykes, Fairbairn, Applegate and other giants of the World War II era will thoroughly enjoy this fascinating piece of CQB history. 5 1/2 x 8 1/2, softcover, photos, 136 pp." Available on Amazon here: http://www.amazon.com/How-Fight-Tough-Jack-Dempsey/dp/1581603150