MTech BALLISTIC Spring Assisted BLACK Law Enforcement Police Tanto Pocket Knife MTech BALLISTIC Spring Assisted BLACK Law Enforcement Police Tanto Pocket Knife. MTech Linerlock A/O. 4 5/8" closed. 3 1/2" assisted opening black finish 440 stainless partially serrated tanto blade with dual thumb studs and extended tang. Blade is etched Law Enforcement Serve and Protect. Black finish aluminum handles with machined hole cutouts. Stainless pocket clip. This Knife comes Brand NEW in Box.