Built to be the fastest and safest Level II Holster on the market, the 5.11 Glock 19/23 ThumbDrive Holster was field tested by Viking Tactics and constructed in partnership with Blade-Tech. With a unique and exclusive single-thumb retention and release system, the Glock 19/23 ThumbDrive Holster gives you a smooth, natural, and safe release, while our removable Chop-Block switch protector increases weapon retention capability. The ThumbDrive Holster features user-defined placement and draw angles, and optional 5.11 Drop/Offset and Thigh Rig kits (sold separately) allow a completely customized carry for maximum speed, comfort, and safety. Will accommodate up to 2.25in belts.