Safariland 6365RDS ALS/SLS Low-Ride Level III Retention Duty Holster FN 509 Left Hand STX Plain Black 6365RDS-2702-412. This holster with the Automatic Locking System (ALS) builds on the foundation of the Self Locking System (SLS). It locks the weapon in all directions upon holstering it's operable with the thumb and the weapon can be drawn straight out of the holster with no twisting required. Safariland cannot guarantee that RDS holsters will be compatible with non-factory (Glock MOS M&P CORE etc.) mounted red dots. Numerous variables including depth of RDS into slide use of dovetail placement on slide etc. can all affect the fit of the holster. Specifications for Safariland 6365RDS ALS/SLS Low-Ride Level lll Retention Duty Holster Left Hand: Manufacturer: Safariland Hand: Left Holster Type: Belt Holster Holster Material: SafariLaminate Application: Duty Quantity: 1 Belt Loop/Snap Width: 2.25 in Fastener/Closure Type: ALS - Automatic Locking System SLS - Self Locking System Condition: New Retention Level: Level III Features of Safariland 6365RDS ALS/SLS Low-Ride Level lll Retention Duty Holster ALS (Automatic Locking Systems) secures weapon once holstered; simple straight up draw once release is deactivated SLS (Self Locking Systems) Rotating Hood For use with red dot optic-equipped weapons SafariLaminate thermal-molded construction protects handgun and sights Suede lined to protect handgun's finish Package Contents: Safariland 6365RDS ALS/SLS Low-Ride Level lll Retention Duty Holster The Safariland Model 6365rds Als /sls Low-ride Level Iii Retention Duty Holster is a quality addition to the Safariland lineup. For more great deals on Belt Holsters by Safariland please browse our Safariland Holsters page. What firearm models does the manufacturer say Safariland 6365RDS ALS/SLS Low-Ride Level lll Retention Duty Holster Left Hand is compatible with? The manufacturer suggests that Safariland 6365RDS ALS/SLS Low-Ride Level lll Retention Duty Holster Left Hand is compatible with Smith & Wesson M&P 40 C.O.R.E. Smith & Wesson M&P 9 STI International Staccato P DUO STI International Staccato P FN 509 Glock 45 MOS Glock 17 MOS Gen 4 Smith & Wesson M&P 40L C.O.R.E. Smith & Wesson M&P 9L C.O.R.E. SIG Sauer P320 Carry 9mm SIG Sauer P320 Carry .40 S&W SIG Sauer P320 Compact .40 S&W SIG Sauer P320 Compact 9mm SIG Sauer M18 Glock 35 MOS Gen 3 Glock 35 MOS Gen 2 Glock 35 MOS Gen 1 Glock 34 MOS Gen 4 Glock 34 MOS Gen 3 Glock 34 MOS Gen 2Safariland 6365RDS-2702-412: 6365RDS ALS/SLS Low-Ride Level III Retention Duty Holster FN 509 Left Hand STX Plain Black