Safariland 6390RDS ALS Level I Duty Holster - Glock 4.4" X300U

The Safariland 6390RDS-O holster delivers proven ALS retention technology specifically engineered for red dot sight equipped duty pistols with weapon-mounted lights. This Level I retention holster accommodates Glock pistols with 4.4-inch barrels and Surefire X300U tactical lights, providing secure carry for law enforcement and security professionals.

What Makes This Different

The 6390RDS series incorporates Safariland's Automatic Locking System (ALS) that secures the firearm automatically upon holstering and releases with natural thumb motion during the draw stroke. Unlike traditional retention holsters that rely on thumb breaks or manual locks, the ALS mechanism operates intuitively without additional training requirements. The open-top design accommodates various red dot optics while maintaining consistent retention pressure.

Key Features

• ALS automatic locking system with straight-up draw motion
• Open-top design compatible with red dot sights and optics
• STX Plain finish provides durability and weather resistance
• Fits Glock pistols with 4.4-inch barrels and X300U lights
• SafariSeven nylon blend construction resists chemicals and temperature extremes
• Adjustable cant and ride height for custom positioning
• Compatible with Safariland holster mounting systems

Field performance demonstrates reliable function across temperature ranges from -50°F to 300°F without material degradation. The holster maintains consistent retention through extended duty cycles and environmental exposure. Law enforcement agencies report smooth draw cycles during qualification courses and tactical training scenarios. The STX finish resists scratching from vehicle entry and daily carry activities.

Technical Specs

• Retention Level: Level I ALS system
• Construction: SafariSeven nylon blend material
• Finish: STX Plain black
• Compatibility: Glock 4.4" barrel with X300U light
• Draw angle: Adjustable cant positioning
• Mounting: Universal belt loop and paddle systems
• Operating temperature: -50°F to 300°F
• Country of origin: United States

This holster represents Safariland's decades of retention system development adapted for modern optics-equipped duty weapons. The combination of proven ALS technology with red dot compatibility addresses current law enforcement equipment requirements without compromising security or draw speed.