The 6354DO features the Automatic Locking System (ALS) and is specifically made for use with red dot optic-equipped weapons. This holster is available with an infrared signature reducing cordura nylon finish in several US military issue colors and camouflage. It also features a double leg strap leg shroud which includes mounting holes for optional accessories. The 6354DO incorporates the Safariland 3-hole pattern allowing the user to mount the holster in various configurations with the use of the quick locking system (QLS). Features: 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 For use with red dot optic equipped weapons Cordura nylon wrap finish reduces Infrared (IR) signature SafariLaminate thermal molded construction protects handgun and sight Adjustable vertical leg strap Standard double strap leg shroud with mounting holes for optional accessories Leg strap features silicone strip for non slip traction Suede lined to protect handgun's finish