At FN Specialties, we provide a curated choice of FN-precise accessories that satisfy the best requirements of quality and overall performance. Boost your FN firearms with our expertly crafted accessories and working experience improved operation and taking pictures precision. This is actually a clone of NcStar mount, completed correct. https://www.primmaryarmshop.com/product-tag/fn-510-accessories/?per_page=9&layout=list