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.Shipping Length: 6.75 inch X Shipping Length: 3.75 inch X Shipping Length: 2.25 inch X