Safariland Model ALS Paddle/Belt Loop Glock Holster Glock 21 Gen 3/Glock 21 Gen 1/Glock 20 Gen 4/Glock 21 Gen 4/Glock 21 Gen 2/Glock 20 Gen. These Belt Holsters from the masters at Safariland feature a thumb activated Automatic Locking System that keeps your firearm in check. With a suede lining the Safariland Model 6378 ALS Paddle Glock Holster keeps the finish of your firearm in pristine condition with every extension. Versatile and functional the Safariland Model 6378 ALS Concealment Glock Holster will be your daily go-to in no time Specifications for Safariland Model 6378 ALS Paddle/Belt Loop Glock Holster: Manufacturer: Safariland Hand: Right Gun Make: Glock Fastener/Closure Type: ALS - Automatic Locking System Holster Material: SafariLaminate Accessory Attachment System: Belt Loop Paddle Fork Holster Type: Paddle Holster Belt Holster Application: Concealment Safariland Model 6378 ALS Belt Loop Glock Holster The model 6378 with STX finish features the Automatic Locking System (ALS). Once the weapon is holstered it locks into place. When the ALS is de-activated by the thumb a simple straight up draw is used. IDPA approved. It features an injection molded paddle design that is highly concealable and rides close to body with a slightly forward weapon cant. It also comes standard with the 567BL belt loop fitting 1.5 in. to 1.75 in. belt widths. Suede lining helps to protect the gun's finish. Package Contents: Safariland Model 6378 ALS Paddle/Belt Loop Glock Holster What firearm models does the manufacturer say Safariland Model 6378 ALS Paddle/Belt Loop Glock Holster is compatible with? The manufacturer suggests that Safariland Model 6378 ALS Paddle/Belt Loop Glock Holster is compatible with Glock 17 Gen 4 Glock 22 Gen 5 Glock 17 Gen 3 Glock 17 Gen 5 Glock 22 Gen 4 Glock 17 Gen 1 Glock 17 Gen 2 Glock 22 Gen 3 Glock 22 Gen 2 Glock 22 Gen 1 Glock 45 Gen 4 Glock 23 Gen 3 Glock 45 Gen 3 Glock 23 Gen 2 Glock 23 Gen 1 Glock 19 Gen 1 Glock 19 Gen 2 Glock 23 Gen 4 Glock 19 Gen 4 Glock 26 Gen 2Safariland 6378-383-411-DM: Model 6378 ALS Paddle/Belt Loop Holster Glock 20/21 Right Hand STX Plain Black