The Evolution Series is a passive retention holster that includes a retention adjustment screw. The tension screw is not pre-set and allows for retention pressure to be adjusted based upon personal preference. When un-holstering, do so in a deliberate and rapid upward motion. Passive retention is automatically engaged upon re-holstering.Fits:CZ 97BSmith & Wesson M&P Shield 9mm & .40Taurus Slim 708Taurus Slim 709Taurus Slim 740Walther PPS 9mm & .40