ALS (Automatic Locking System) secures weapon once holstered. Simple straight up draw once release is deactivated. Open-top design without SLS for quick retrieval of weapon. Constructed of SafariSeven, a proprietary nylon blend that is completely non-abrasive to a firearm's finish. It comes standard with the 567BL belt loop, for 1.5 in. (38 mm) to 1.75 in. (45 mm) belt widths. Specifications for Safariland 7377 7TS ALS Belt Slide Glock Holster: Manufacturer: Safariland Gun Make: Glock Holster Type: Outside the Waistband Holster, Belt Holster Holster Material: SafariSeven Finish: Plain Application: Concealment Quantity: 1 Belt Loop/Snap Width: 1.5 - 1.75 in Fastener/Closure Type: ALS - Automatic Locking System Condition: New Age Group: Adults Features of Safariland 7377 7TS ALS Belt Slide Glock Holster ALS (Automatic Locking System) secures weapon once holstered, simple straight up draw once release is deactivated Open-top design without SLS for quick retrieval of weapon Constructed of SafariSeven, a proprietary nylon blend that is completely non-abrasive to a firearm's finish Raised stand-off surfaces in holster's interior creates air space around the weapon allowing dirt and moisture to quickly clear any contact with the firearm Injection-molded belt loop is user adjustable for cant and can be worn crossdraw Package Contents: Safariland 7377 7TS ALS Belt Slide Glock Holster What firearm models does the manufacturer say Safariland 7377 7TS ALS Belt Slide Glock Holster is compatible with? The manufacturer suggests that Safariland 7377 7TS ALS Belt Slide Glock Holster is compatible with Glock 31, Glock 17, Glock 22, Glock 19, Glock 23, Glock 45, Glock 19X, Glock 48, Glock 19 Gen 5