BLACKHAWK Level 3 Tactical SERPA Holster, Fits Glock 17/19/22/23/31/32, Right Hand, Black 430600BK-R The SERPA Level 3 Tactical Holster is the highest level of function, retention and security. It's perfect for high-threat environments and tactical operations. The drop-leg configuration is an ideal holster location. The thumb-activated pivot guard and SERPA Auto-Lock release secures the weapon at Level 3 retention, releasing only when the buttons are depressed during the draw cycle.