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Safariland

Safariland 6390RDSO2832131 ALS Black Fits Glock 19 MOS Compatible w/ SureFire X300U Right Hand

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Firearms Red

Red dot sights mounted to

Open-top Holster

Automatic Locking System (ALS)

Internal Lock

Retains the weapon in all

Thumb-operated Release

Supports a straight-up draw

Mid-ride Belt

Loop rides close to the

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SKU: 6390RDSO2832131-781602253024

Overview

Built for pistols equipped with a red dot sight, this open-top holster is intended for secure carry with a straightforward draw. Its Automatic Locking System holds the firearm in place without straps or snaps, and the thumb-operated release supports a direct upward draw when needed. The mid-ride belt loop keeps the holster positioned close to the body, making it a practical option for right-handed users carrying a Glock 19 MOS with a SureFire X300U.

Why Hunters Choose the Safariland

Firearms Red

Red dot sights mounted to

Open-top Design

Keeps the holster free of

Als Internal

Locking system retains the weapon

Thumb-operated Release

Supports a simple straight-up draw

Mid-ride Belt

Loop rides close to the

Key Features

  • Designed for firearms with red dot sights mounted to them
  • Open-top holster with Automatic Locking System (ALS)
  • Internal lock retains the weapon in all directions
  • Thumb-operated release supports a straight-up draw
  • Mid-ride belt loop rides close to the body
  • Fits Glock 19 MOS; right-hand configuration

Best Used For

  • Hunters using a Glock 19 MOS with a mounted red dot sight
  • Right-handed users wanting an open-top holster with thumb-operated retention
  • Field carry setups that benefit from a mid-ride belt loop
  • Shooters who prefer a straight-up draw after deactivating the ALS
  • Users needing a holster compatible with a SureFire X300U

Specifications

Belt LoopMid-ride belt loop
Blade FinishSTX Tactical
ColorBlack
Firearm FitGlock 19 MOS
HandRight Hand
Holster TypeOpen-top
Light CompatibilitySureFire X300U
Red Dot Sight CompatibleYes
Retention SystemAutomatic Locking System (ALS)
Ride HeightMid-ride

Pros

  • Designed for firearms with red dot sights mounted to them.
  • Open-top design keeps the holster free of straps and snaps.
  • ALS internal locking system retains the weapon in all directions.
  • Thumb-operated release supports a simple straight-up draw.
  • Mid-ride belt loop rides close to the body.
  • Right-hand configuration with Glock 19 MOS fit.

Considerations & Trade-offs

  • Designed specifically for firearms with red dot sights, so it is not a general-purpose holster for every Glock 19 setup.
  • Open-top design and ALS retention mean there are no straps or snaps to manage, but the draw is dependent on using the thumb release correctly.
  • Mid-ride belt loop keeps the holster close to the body, which may be a preference point depending on carry position and gear setup.

Suggested Comparisons

  • Red dot sight compatible holsters
  • Open-top retention holsters
  • Mid-ride belt holster setups
  • Right-hand handgun holsters

Suggested Accessories

  • Belt holster
  • Pistol magazine pouch
  • Red dot optic
  • Duty belt

Frequently Asked Questions

Is this holster made for a Glock 19 MOS with an optic installed?

Yes. The product data lists firearm fit as Glock 19 MOS, and the 6390RDS holster is specifically designed for firearms with red dot sights mounted to them.

Is this a right-hand holster?

Yes. The product title and specifications both indicate right-hand use.

What retention system does the 6390RDS use?

It uses Safariland’s Automatic Locking System (ALS), an internal locking device that retains the weapon in all directions without straps or snaps to manipulate.

Does this holster use a thumb release?

Yes. The product description says the holster is completely operable with the thumb, and once the ALS is deactivated, a straight-up draw is used.

What ride height or carry position does it have?

It features a mid-ride belt loop that rides close to the body. No further sizing or carry-adjustment details are provided in the source data.