Blackhawk SERPA CQC Holster: * Passive retention detent adjustment screw * SERPA Auto Lock release * Reinforces full master grip and superior draw technique * Immediate retention and audible click upon re-holster for security * Includes belt loop and paddle platform * Increase your holster"s versatility with the SERPA Quick Disconnect System Kit (sold separately) * Model# BLK410507BKR