Safariland Model 6354do Als Optic Tactical Holster For Glock 19 . The 6354DO Holster by Safariland features the Automatic Locking System (als). Once the weapon is holstered it locks into place. The Safariland Holster 6354DO is specifically designed for firearms with a red dot sight mounted to it. The Safariland 6354DO Holster features a 3 hole pattern incorporating the Safariland 3-hole pattern which allows the user to mount the holster in various configurations with the use of the Quick Locking System (qls). The holster also features a double leg strap leg shroud which includes mounting holes for optional accessories. The Safariland 6354DO Holster also has the streamlined silhouette making it perfect for traditional firearms as concealed carry pistols. Package Contents: Safariland Model 6354do Als Optic Tactical Holster For Red Dot Optic