PMT (Percision Molded Technology) allows Combat engineers to design barrel wall thickness to maximize barrel trampoline effect & bat performance. * BFT (Blended Fiber Technology) is used to create more trampoline effect without sacrificing durability. * GT (Gear Technology) has a special taper in the barrel, which provides a softer feel and greater performance. * MAP (Maximum Allowable Performance). Combat"s single wall construction allows for longer barrel lengths and lighter bat weight. * Approved for play in LLB, DIXIE, PONY, AABC, BABE RUTH, and USSSA.