Description The 6354DO features the Automatic Locking System (ALS) and is specifically made for use with red dot optic-equipped weapons. This holster is available with an infrared signature reducing Cordura nylon finish in several US military issue colors and camouflage. The 6354DO incorporates the Safariland 3-hole pattern allowing the user to mount the holster in various configurations with the use of the Quick Locking System (QLS).NOTE: This holster accommodates the optic behind the rear sight.ALS® (Automatic Locking System) secures weapon once holstered; simple straight up draw once release is deactivatedOpen-top design without SLS for quick retrieval of weaponFor use with red dot optic-equipped weaponsCordura™ nylon-wrap finish reduces Infrared (IR) SignatureSafariLaminate™ thermal-molded construction protects handgun and sightsSuede lined to protect handgun’s finishFIT: Glock 19/23 GENS 1-4 with M3, TLR-1, or SureFire X200/X300, X300U, X300V, TLR-1HL, Inforce APL, Nightstick TWM-350, TWM-350S, TWM-850, TWM-850S