C&H Precision Weapons Trijicon RMR to Holosun 509T Steel Adapter Plate - Black - RMR-509T-ST - UPC: 616943734867
Product Description
The C&H Precision Weapons RMR-509T-ST is a duty-grade steel adapter plate engineered to mount the Holosun HE509T enclosed red dot optic onto slides milled for the Trijicon RMR footprint. Precision CNC-machined in the USA from mild steel and treated with a durable black finish, this plate replaces lightweight polymer or aluminum solutions with a ultra-rigid interface designed to handle severe slide acceleration and heavy duty use.
Engineered with patented steel replaceability technology and integrated recoil lugs on the underside, the RMR-509T-ST mounts flat into the slide's RMR optic cut. The top clamping rail geometry provides a full-contact clamping surface for the Holosun 509T's internal cross-bolt system. By maintaining strict manufacturing tolerances, C&H Precision eliminates movement between the slide, plate, and optic, ensuring maximum thread engagement and zero retention under hard recoil.
Designed with an ultra-thin deck profile, this adapter plate keeps the optic mounted as low to the bore as possible. This low sightline helps maintain intuitive index alignment and allows shooters to achieve a functional cowitness when paired with standard suppressor-height iron sights.
*Armorer Bench Notes & Real-World Staging Guidance:
Slide & Optic Compatibility Matrix:
• Slide Footprint: Direct fit for slides cut for Trijicon RMR / Holosun 507C / 407C / 508T footprints.
• Optic Interface: Accepts Holosun HE509T enclosed-emitter red dot series.
Mounting & Torque Steps:
1. Degrease slide optic pocket and mounting screw holes thoroughly with solvent before assembly.
2. Seat the C&H plate into the slide pocket, ensuring underside recoil lugs engage slide sockets evenly.
3. Secure plate using the included mounting screws torqued to 12–15 in-lbs (apply blue medium-strength threadlocker to screw threads).
4. Mount the HE509T onto the plate rail and torque the optic side-clamp bolt to 15 in-lbs.
Key Features
- Precision CNC-machined from solid steel for ultimate strength and deformation resistance.
- Converts standard Trijicon RMR slide cuts to accept Holosun HE509T enclosed optics.
- Ultra-thin profile keeps optic deck height minimal for lower sightline and iron sight alignment.
- Corrosion-resistant black finish for long-term protection against sweat, water, and solvents.
- Integrated underside recoil lugs distribute shear stress away from mounting screws.
- Includes high-grade mounting hardware and threadlocker for immediate installation.
- Proudly designed and manufactured in the USA.
Product Specifications
- Brand: C&H Precision Weapons (CHPWS)
- MPN / Model: RMR-509T-ST
- UPC: 616943734867
- Material: Machined Steel
- Finish: Black
- Slide Cut Fitment: Trijicon RMR / Holosun 507C / 407C / 508T
- Optic Fitment: Holosun HE509T
- Mass: ~0.9 oz
