C&H Precision V4 Optic Mounting Plate For FN509 510 545 to ACRO Matte Finish Black FN509-ACRO-ST UPC 616943735468
Product Description
The C&H Precision V4 Optic Mounting Plate (FN509-ACRO-ST) is a duty-grade, low-profile red dot adapter plate designed specifically to mount enclosed emitter Aimpoint ACRO P-1 and P-2 optics onto FN 509, FN 510, and FN 545 Tactical optics-ready slide cuts. Engineered to replace factory plastic/composite adapter plates, the V4 series provides an ultra-rugged steel foundation built for duty carry, hard combat training, and law enforcement applications.
Precision CNC-machined in the USA from heavy-duty stainless steel and coated with a corrosion-resistant black finish, the FN509-ACRO-ST incorporates stainless steel mounting hardware and C&H Precision's patented replaceable T-nut thread system. This design provides maximum thread engagement and prevents stripped mounting threads during hard recoil cycles or optic maintenance.
Designed to sit flush within the FN tactical optic pocket, this steel adapter maintains a low bore axis for optimal point-of-aim alignment and proper co-witness with factory iron sights. Complete with custom mounting screws and threadlocker, C&H Precision delivers an indestructible optic interface that holds zero under extreme operational conditions.
Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Fits FN 509 (MDT / Tactical / MRD), FN 510 Tactical, and FN 545 Tactical factory optics-ready slides. Converts the FN slide cut to accept Aimpoint ACRO P-1 / P-2 and Steiner MPS enclosed red dot sight footprints.
- Perform a complete firearm safety check: drop the magazine, lock the slide rearward, and visually inspect the chamber to verify zero live rounds are present.
- Remove the factory optic cover plate or existing adapter plate and thoroughly clean the slide pocket threads of oil and debris.
- Insert the C&H Precision stainless steel T-nuts into the designated slide pocket recesses.
- Place the FN509-ACRO-ST mounting plate flush into the slide pocket, ensuring all screw channels align with the underlying T-nuts.
- Apply a small drop of included vibratite/threadlocker to the plate mounting screws and torque to 12–15 in-lbs using an inch-pound torque wrench.
- Mount your Aimpoint ACRO onto the integral clamping rail of the plate, tightening the ACRO side clamp bolt to 25 in-lbs. Allow threadlocker to cure 24 hours prior to range zeroing.
Key Features
- Duty-Grade Steel Construction: Precision CNC-machined from stainless steel to eliminate plate flex and withstand harsh slide acceleration.
- Patented Replaceable T-Nut System: Features steel T-nut inserts that maximize thread engagement and protect against stripped threads.
- Enclosed Optic Footprint Compatibility: Purpose-built for Aimpoint ACRO P-1, Aimpoint ACRO P-2, and Steiner MPS enclosed red dot sights.
- Low-Profile Axis Profile: Minimizes sight height above bore for intuitive dot indexing and co-witness sight picture.
- Corrosion-Resistant Black Coating: Protective matte finish resists holster wear, sweat, cleaning solvents, and weather exposure.
- Made in the USA: Engineered and manufactured in the United States to strict tactical performance tolerances.
Product Specifications
- Brand: C&H Precision (CHPWS)
- Model/Series: V4 Optic Mounting Plate
- MPN / SKU: FN509-ACRO-ST
- UPC: 616943735468
- Platform Compatibility: FN 509 Series, FN 510 Tactical, FN 545 Tactical (Optics-Ready Models)
- Optic Footprint Compatibility: Aimpoint ACRO P-1 / P-2, Steiner MPS
- Plate Material: CNC-Machined Stainless Steel
- Hardware Included: Stainless Steel Screws, Steel T-Nuts, Threadlocker
- Finish / Color: Matte Black
- Torque Specification (Plate to Slide): 12–15 in-lbs
- Weight: 1.4 oz
- Country of Origin: USA
