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The Holosun 509 Adapter Plate allows you to mount the HE509T red dot sight directly onto your 9mm or .40 MOS slide, saving rail space. Designed by Holosun experts, this steel plate enhances accuracy and simplifies sight adjustments, making it ideal for beginners. Weighing just 1 oz., the plate withstands recoil and improves sight alignment, ensuring faster acquisition times and tighter tolerances. A must-have tool for mounting your HE509T sight on a MOS slide.
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