C H Precision HK 2020 VP9 V4 MIL LEO to Holosun 509 T STEEL Adapter Plate Black Finish Includes Mounting Hardware HK 509T ST UPC 616943735383
Product Description
The C&H Precision HK 2020 VP9 V4 MIL / LEO to Holosun 509T Steel Adapter Plate in Black Finish (MPN: HK-509T-ST) is a duty-grade, high-strength steel optic mounting interface designed to adapt Holosun 509T enclosed red dot sights to HK VP9 2020 factory optics-ready slide cuts. Engineered specifically for hard-use law enforcement, military, and concealed carry applications, this steel adapter plate bridges the HK V4 MIL / LEO footprint with Holosun's enclosed clamp mounting rail.
Precision CNC-machined in the USA from ultra-durable carbon steel and treated w/ a corrosion-resistant black nitride finish, the HK-509T-ST offers maximum shear strength under harsh slide acceleration and heavy recoil. Unlike thinner aluminum plates, this steel construction eliminates flex and thread stripping risks under duty use. Integrated recoil shear lugs align perfectly w/ the HK VP9 slide pocket to transfer kinetic force away from the plate mounting screws, ensuring zero shift and long-term optic retention.
Designed for direct drop-in installation onto 2020+ HK VP9 optics-ready slides, the C&H Precision HK-509T-ST includes all necessary low-profile plate-to-slide mounting hardware and threadlocker. It maintains a low deck height, allowing proper co-witnessing w/ suppressor or optic-height iron sights for an unshakeable tactical staging setup.
Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Fits Heckler & Koch VP9 / VP99 / VP9SK / VP9L 2020+ factory optics-ready slides (V4 MIL / LEO footprint cut). Mounts Holosun HE509T, HE509-RD, and HE509-GR enclosed red dot sights. (Note: Will NOT fit pre-2020 non-optics-ready VP9 slides or custom aftermarket slide cuts).
- Perform a complete firearm safety check: drop the magazine, lock the slide rearward, and visually/physically inspect the chamber to verify zero live rounds are present.
- Remove the factory HK slide cover plate and clean the exposed optic pocket and threaded screw holes using isopropyl alcohol.
- Place the C&H Precision HK-509T-ST steel adapter plate into the VP9 slide pocket, ensuring indexing lugs sit flush.
- Apply a small drop of included medium-strength blue Threadlocker (VC-3 / Loctite 242) to the plate mounting screws.
- Torque the plate mounting screws evenly to 12–15 in-lbs using a calibrated inch-pound torque driver.
- Slide your Holosun 509T onto the plate cross-dovetail rail, tighten the side clamping screw to 15 in-lbs, and perform zeroing at your desired range.
Key Features
- Heavy-Duty Steel Construction: Machined from solid carbon steel to handle hard duty, military, and law enforcement recoil forces.
- Custom HK VP9 2020 V4 Cut Fitment: Engineered specifically for factory 2020+ HK VP9 optics-ready slide pockets.
- Direct Holosun 509T Clamp Footprint: Integrates clamping rail for Holosun HE509T series enclosed red dot sights.
- Integrated Recoil Shear Lugs: Absorbs slide reciprocation energy to protect mounting screws and preserve zero.
- Corrosion-Resistant Black Nitride Finish: Protective surface treatment resists holster friction, perspiration, and solvents.
- Complete Mounting Hardware Included: Comes w/ precision screws, threadlocker, and installation instructions.
Product Specifications
- Brand: C&H Precision Weapons (CHPWS)
- Model/Series: V4 MIL / LEO Steel Optic Adapter Plate
- MPN / SKU: HK-509T-ST
- UPC: 616943735383
- Firearm Compatibility: HK VP9 / VP9SK / VP9L / VP9 Tactical (2020 Optics-Ready Models)
- Optic Footprint Compatibility: Holosun 509T Footprint (HE509T, HE509-RD, HE509-GR)
- Material: CNC-Machined Carbon Steel
- Finish / Color: Black Nitride
- Included Accessories: Mounting Screws & Threadlocker
- Weight: 1.2 oz
- Country of Origin: USA
