The Safariland 6390RDS/6390RDSO is an ALS-equipped mid-ride duty holster designed for pistols fitted with red dot optics. Its open-top configuration and Automatic Locking System secure the firearm in all directions without straps or snaps and permit a straight-up draw once the ALS is deactivated. The holster rides close to the body and is specified for use with a SureFire X300U.
Key Specifications
- Model identifier(s): 6390RDS / 6390RDSO.
- Fits firearms: Glock 19 Gen 3–4, Glock 19 Gen 5, Glock 19 MOS Gen 3–4, Glock 19 MOS Gen 5, and Glock 19X.
- Retention system: Automatic Locking System (ALS) — Level I retention.
- Design: Open-top holster designed for pistols with mounted red dot sights.
- RDSO variant: Open pocket that protects the optic and does not use a flip-up dust cover.
- Optic compatibility: Compatible with SureFire X300U.
- Limitations: Not compatible with the Trijicon SRO.
- Hand orientation: Right Hand.
- Color and finish: Black with STX Tactical finish.
- Mounting: Mid-ride belt loop that rides close to the body.
For users who require dependable retention with optic accommodation, the 6390RDS/6390RDSO delivers a practical mid-ride solution that balances secure locking with a straightforward draw. Its ALS mechanism, optic-protecting RDSO pocket option, and close-to-body ride are well suited to duty use and experienced shooters seeking reliable, no-nonsense gear.
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