The 6354rdso Holster Is Designed For Firearms With Red Dot Sights. Its Automatic Locking System (als) Secures The Firearm. Unlike Safariland's Rds Series, The Rdso Has An Open Pocket That Protects The Optic And Does Not Use A Flip-up Dust Cover. this Holsters Has The Qls 19 Locking Fork Installed. The Qls 19 Fork Can Be Used Any Mounting Platform (leg Shroud, Belt Loop, Etc.) That Has The Qls 22 Receiver Plate Installed. gun Fit: glock 19 Mos Iti M3 glock 19 Mos Streamlight Tlr-1 glock 19 Mos Streamlight Tlr-1hl glock 19 Mos Surefire X200 glock 19 Mos Surefire X300 glock 19 Mos Surefire X300u glock 19 Mos Leupold Deltapoint glock 19 Mos Trijicon Rmr glock 19 Mos Dr. Optic glock 19 Mos J Point glock 19 Mos Vortex Viper glock 19 Mos Burris Fastfire glock 19 Mos Inforce Apl glock 19 Mos Nightstick Twm-350 glock 19 Mos Nightstick Twm-350s glock 19 Mos Nightstick Twm-850 glock 19 Mos Nightstick Twm-850s Specifications for Safariland 6354rdso - Als Holster W/ Qls19 Fork: Manufacturer: Safariland Color: Black Hand: Left Finish: STX Tactical Package Contents: Safariland 6354rdso - Als Holster W/ Qls19 Fork