ALS (Automatic Locking Systems) secures weapon once holstered; simple straight up draw once release is deactivated For use with red dot optic-equipped weapons SafariLaminate thermal-molded construction protects handgun and sights Suede lined to protect handgun's finish The 6390RDS holster is specifically designed for firearms with red dot sights mounted to them. This open-top holster features the Automatic Locking System (ALS), an internal locking device that retains the weapon in all directions with no straps or snaps to manipulate. Once the weapon is holstered, it locks into place. The holster is completely operable with the thumb and once the ALS is deactivated a simple straight-up draw is used. Features a low-ride belt loop that is 1.5'' lower than standard, rides close to the body, and has a suede lining to protect the gun's sights and finish. Gun fit: Smith & Wesson M&P 2.0 9 ITI M3 Smith & Wesson M&P 2.0 9 Streamlight TLR-1 Smith & Wesson M&P 2.0 9 Streamlight TLR-1HL Smith & Wesson M&P 2.0 9 SureFire X200 Smith & Wesson M&P 2.0 9 SureFire X300 Smith & Wesson M&P 2.0 9 SureFire X300U Smith & Wesson M&P 2.0 9 Leupold Deltapoint Smith & Wesson M&P 2.0 9 Trijicon RMR Smith & Wesson M&P 2.0 9 Dr. Optic Smith & Wesson M&P 2.0 9 J Point Smith & Wesson M&P 2.0 9 Vortex Viper Smith & Wesson M&P 2.0 9 Burris FastFire Smith & Wesson M&P 2.0 9 Inforce APL Smith & Wesson M&P 2.0 9 Nightstick TWM-350 Smith & Wesson M&P 2.0 9 Nightstick TWM-350S Smith & Wesson M&P 2.0 9 Nightstick TWM-850 Smith & Wesson M&P 2.0 9 Nightstick TWM-850S