BLACKHAWK CQC SERPA Holster With Belt and Paddle Attachment, Fits Glock 19/23/32/36, Left Hand, Black 410502BK-L Featuring their patented SERPA Auto-Lock(TM) technology" the SERPA CQC Concealment Holster delivers a smooth draw" easy re-holster and unparalleled handgun security in a sleek package that is perfect for concealed carry. Features a passive retention detent adjustment screw" and a speed-cut design for rapid draw" target acquisition and re-holstering.