The Forbes Evolution Holster 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. Designed for: Ruger EC9S, LC380, LC9, LC9S, LC9S Pro.