Safariland Model 6355RDS-SP10 ALS Drop Leg Holster S&W M&P 9mm/.40 & M&P 2.0 .40 only w/Sure Fire X300 Right Hand Cordura Single Strap Black. The experts at Safariland created a lightweight holster with a single leg strap and leg shroud that really helps lock the holster onto your leg. This holster features the Automatic Locking System (ALS) an internal locking device that retains the weapon in all directions providing secure retention in an open top holster for tactical use. With ALS once the weapon is holstered it locks into place providing an extra measure of security for your firearm. Further with holster it it's completely operable with the thumb making it very instinctive to use. And finally once the device is de-activated a simple straight up draw can be used. Keep your pistol secure without limiting your draw in the field with the Safariland Model 6355RDS-SP10 ALS Drop Leg Holster. Specifications for Safariland Model 6355RDS-SP10 ALS Drop Leg Holster: Manufacturer: Safariland Holster Type: Drop Leg Holster Thigh Holster Light/Laser Attachment: SureFire X300 Optic Cut: Vortex Viper Burris Fastfire Trijicon RMR Application: Tactical Fastener/Closure Type: ALS - Automatic Locking System Package Contents: Safariland Model 6355RDS-SP10 ALS Drop Leg Holster What firearm models does the manufacturer say Safariland Model 6355RDS-SP10 ALS Drop Leg Holster is compatible with? The manufacturer says that Safariland Model 6355RDS-SP10 ALS Drop Leg Holster is compatible with SIG Sauer P320 Smith & Wesson M&P 9L Smith & Wesson M&P 9 Smith & Wesson M&P 40 Smith & Wesson M&P 40 M2.0Safariland 6355RDS-2192-781-SP10: Model 6355RDS-SP10 ALS Drop Leg Holster S&W M&P 9mm/.40 & M&P 2.0 .40 only w/Sure Fire X300 Right Hand Cordura Single Strap Black