Safariland 6390RDS ALS Holster Glock 17 MOS w/ SureFire X300U

The Safariland 6390RDSO832131 ALS holster delivers Level I retention specifically engineered for Glock 17 MOS pistols equipped with SureFire X300U weaponlights. This duty-grade holster combines the proven ALS (Automatic Locking System) with red dot sight compatibility for modern tactical applications.

What Makes This Different

The 6390RDS series incorporates an open-top design that accommodates mounted optics while maintaining the signature ALS thumb-activated release mechanism. Unlike standard holsters that interfere with red dot sights, this model features a raised profile that clears popular optics including Trijicon RMR, Leupold DeltaPoint Pro, and Aimpoint ACRO series. The holster automatically locks the pistol in place upon holstering, requiring no manual safety engagement.

Key Features

• ALS automatic locking system secures weapon upon holstering with thumb-activated release
• Open-top design accommodates red dot sights and suppressor-height iron sights
• Molded SafariLaminate construction resists chemicals, temperature extremes, and impact damage
• Compatible with Glock 17 MOS Gen 3-4 pistols equipped with SureFire X300U series lights
• Adjustable cant positions from 0 to 15 degrees forward
• Belt loop fits duty belts up to 2.25 inches wide
• Suede lining protects pistol finish during draw and holstering

Field testing demonstrates consistent sub-second draw times while maintaining positive weapon retention during physical activity. The holster performs reliably in temperatures from -40°F to 300°F and resists common duty chemicals including pepper spray residue and cleaning solvents. Law enforcement agencies nationwide have adopted the 6390 series for patrol and tactical operations where weaponlight-equipped pistols are standard issue.

Technical Specs

• Material: SafariLaminate thermoplastic construction
• Retention: Level I ALS automatic locking system
• Compatibility: Glock 17 MOS Gen 3-4 with SureFire X300U/X300U-A/X300U-B
• Belt attachment: 2.25-inch belt loop with adjustable cant
• Weight: 4.2 ounces
• Color: Black finish
• Country of origin: Made in USA

This holster represents the intersection of traditional retention technology with modern optics-ready firearms. Safariland's proven ALS system adapts seamlessly to red dot-equipped duty pistols, maintaining the security standards required by professional users.