The 7378RDS holster is designed to fit and protect handguns with red dot optics. It features the ALS (Automatic Locking System) retention, an internal locking device that secures the firearm in all directions simply upon reholstering. This ergonomic design features a straight-up draw and the release is completely operable with the thumb, making it very instinctive to use. The 7378RDS holster has an open-top design without SLS for quick retrieval of firearm. This model is constructed of the innovative SafariSeven material, a high performance nylon blend. SafariSeven is highly durable and practically impervious to the elements. Gun fit: Glock 17 ITI M3 Glock 17 Streamlight TLR-1 Glock 17 Streamlight TLR-1HL Glock 17 SureFire X200 Glock 17 SureFire X300 Glock 17 SureFire X300U Glock 17 Inforce APL Glock 17 Nightstick TWM-350 Glock 17 Nightstick TWM-350S Glock 17 Nightstick TWM-850 Glock 17 Nightstick TWM-850S Glock 22 ITI M3 Glock 22 Streamlight TLR-1 Glock 22 Streamlight TLR-1HL Glock 22 SureFire X200 Glock 22 SureFire X300 Glock 22 SureFire X300U Glock 22 Inforce APL Glock 22 Nightstick TWM-350 Glock 22 Nightstick TWM-350S Glock 22 Nightstick TWM-850 Glock 22 Nightstick TWM-850S