C&H Precision GL509TST V4 MIL/LEO Adapter Holosun 509T Mount

The C&H Precision GL509TST V4 MIL/LEO Adapter transforms Glock pistols into precision platforms by enabling direct mounting of Holosun 509T enclosed reflex sights. This black anodized aluminum adapter eliminates the need for co-witness iron sights while maintaining the pistol's low profile. Built specifically for military and law enforcement applications, the adapter withstands repeated recoil cycles and harsh operational conditions.

What Makes This Different

Unlike universal mounting plates that add unnecessary height, the GL509TST V4 positions the Holosun 509T at optimal eye level for rapid target acquisition. The precision-machined aluminum construction maintains zero through thousands of rounds while adding minimal weight to the slide. C&H Precision's proprietary mounting geometry distributes recoil forces evenly across the adapter, preventing screw loosening and sight shift that plague inferior mounting solutions.

Key Features

• Direct-mount compatibility with Holosun 509T enclosed reflex sights
• 6061-T6 aluminum construction with Type III hard anodized finish
• Fits standard Glock MOS and milled slide configurations
• Torx screws included with thread-locking compound pre-applied
• 0.125-inch profile height maintains natural sight picture
• Precision CNC machining ensures consistent zero retention
• MIL/LEO specification tested for duty and tactical applications

Field testing demonstrates the adapter maintains zero through 5,000+ round count evaluations across multiple calibers. The low-profile design preserves existing holster compatibility while enabling rapid sight acquisition in close-quarters scenarios. Weather sealing between the adapter and optic prevents moisture infiltration during extended outdoor operations. Competition shooters report consistent 1.5 MOA groups at 25 yards when properly zeroed.

Technical Specs

• Material: 6061-T6 aluminum alloy
• Finish: Type III hard anodized black
• Weight: 0.8 ounces
• Height: 0.125 inches above slide
• Compatibility: Holosun 509T footprint optics
• Mounting: Glock MOS and direct-milled slides
• Hardware: Torx screws with thread locker included
• Country of Origin: United States

Professional armorers choose C&H Precision adapters for their consistent manufacturing tolerances and proven durability under operational stress. The GL509TST V4 represents the current standard for Holosun 509T integration on Glock platforms. Limited availability reflects high demand from military and law enforcement procurement contracts.