USED Safariland Model ALS Belt Loop Glock Holster Glock 17/Glock 22 Left Hand STX Plain Black. It locks immediately upon holstering and stays that way until the weapon is drawn. This helps to prevent easy one-handed release of the weapon. The holster is fully lined with suede to cushion the gun and features a patented ALS (Automatic Locking System). Once the weapon is holstered it locks into place providing an extra measure of security from open top holsters. A straight up draw is used once the ALS is de-activated. It comes standard with the 567BL belt loop for 1.5" (38mm) to 1.75" (45mm) belt widths. Specifications for Safariland Model 6377 ALS Belt Loop Glock Holster Left Hand: Manufacturer: Safariland Color: Black Gun Make: Glock Hand: Left Holster Type: Belt Holster Holster Material: SafariLaminate Light/Laser Attachment: No Accessory Attachment System: Belt Loop Finish: STX Plain Application: Concealment Quantity: 1 Belt Loop/Snap Width: 1.5 - 1.75 in Fastener/Closure Type: ALS - Automatic Locking System Holster Finish: STX Plain Fabric/Material: SafariLaminate Features of Safariland Model 6377 ALS Belt Loop Glock Holster Left Hand This holster is a concealment version of the Automatic Locking System (ALS) series holsters. Once the weapon is holstered it locks into place providing an extra measure of security from open top holsters. A straight up draw is used once the ALS is de-activated. It comes standard with the 567BL belt loop for 1.5 in. (38 mm) to 1.75 in. (45 mm) belt widths. Suede lining helps protect the gun's sights and finish SafariLaminate wraparound design with a tough STX finish. Package Contents: Safariland Model 6377 ALS Belt Loop Glock Holster Left Hand What firearm models does the manufacturer say Safariland Model 6377 ALS Belt Loop Glock Holster Left Hand is compatible with? The manufacturer says that Safariland Model 6377 ALS Belt Loop Glock Holster Left Hand is compatible with Glock 17 Glock 22 Glock 19 Glock 23 Glock 36Safariland 6377-83-412: Model 6377 ALS Belt Loop Holster Glock 17/22/31 Left Hand STX Plain Black