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 de-activated a simple straight up draw is used. Features a mid-ride belt loop that rides close to the body, and a suede lining to protect the gun's sights and finish. Gun fit: Glock 17 Gen 1-4 ITI M3 Glock 17 Gen 1-4 Streamlight TLR-1 Glock 17 Gen 1-4 Nightstick TWM-850S Glock 22 Gen 1-4 ITI M3 Glock 22 Gen 1-4 Streamlight TLR-1 Glock 22 Gen 1-4 Streamlight TLR-1HL Glock 22 Gen 1-4 SureFire X200 Glock 22 Gen 1-4 SureFire X300 Glock 22 Gen 1-4 SureFire X300U Glock 22 Gen 1-4 Inforce APL Glock 22 Gen 1-4 Nightstick TWM-350 Glock 22 Gen 1-4 Nightstick TWM-350S Glock 17 Gen 1-4 Streamlight TLR-1HL Glock 22 Gen 1-4 Nightstick TWM-850 Glock 22 Gen 1-4 Nightstick TWM-850S Glock 17 Gen 1-4 SureFire X200 Glock 17 Gen 1-4 SureFire X300 Glock 17 Gen 1-4 SureFire X300U Glock 17 Gen 1-4 Inforce APL Glock 17 Gen 1-4 Nightstick TWM-350 Glock 17 Gen 1-4 Nightstick TWM-350S Glock 17 Gen 1-4 Nightstick TWM-850