The Safariland 537 GLS Open Top Belt Slide Holster (Safariland part no. 537-283-61) is built for the Glock 19 and 23, right-hand carry, using Safariland’s Grip Lock System (GLS) in place of a strap or hood for retention. GLS automatically secures the pistol the moment it is holstered and releases only when the middle finger presses the release during a standard shooting grip, so the draw and release happen in the same motion. The soft, flexible holster body is designed to mold itself around the wearer over time, and tension adjustment lets the fit be tailored to the individual pistol and preference. The open-top belt slide design keeps the whole package slim for comfortable concealed or duty-adjacent carry.

Key Specifications

• Uses Safariland’s Grip Lock System (GLS), which secures the pistol automatically once holstered.
• Retention releases via the middle finger during a standard shooting grip.
• The soft, flexible holster body molds to the wearer over time for a more comfortable carry.
• Tension adjustment lets the wearer customize how firmly the pistol sits in the shell.
• Sized to fit 1.5-inch (38mm) belt widths.
• Fits the Glock 19 and 23, configured for right-hand carry.

Frequently Asked Questions

How does the GLS retention release work? The middle finger presses the GLS release as part of a standard shooting grip, so drawing and releasing happen together.

Does this holster fit both the Glock 19 and 23? Yes, the same shell fits both models.

Buy the Safariland 537 GLS Belt Slide Holster

A retention system built into your natural grip means one less motion between you and the target, and this 537 GLS holster brings that speed to Glock 19/23 carry. Shop our concealed carry holsters selection from Safariland, and our Lubbock, Texas team can help confirm fit and tension setup.