At FN Specialties, we offer a curated choice of FN-specific accessories that meet the very best requirements of top quality and efficiency. Improve your FN firearms with our expertly crafted accessories and working experience enhanced features and capturing precision. This is basically a clone of NcStar mount, finished proper. https://www.primmaryarmshop.com/product-tag/fn-510-accessories/?per_page=9&layout=list