BLACKHAWK! SERPA Level 3 Auto Lock Duty Holster - Plain Finish Fits Glock 17, 19, 22, 23, 31, and 32 Passive retention detent adjustment screw and SERPA Auto Lock release Thumb-activated Pivot Guard for additional security - No thumb break or awkward middle finger release to slow down your draw No snaps or hoods to accidentally open Includes angle-adjustable jacket-slot belt loop