{"product_id":"holosun-k-mounting-plate-for-fn-509-kplt-fn509","title":"Holosun K Mounting Plate for FN 509","description":"\u003cp\u003eThe Holosun KPLT-FN509 is a genuine Holosun adapter plate that carries a K footprint optic on FN 509 optics-ready slides using FN's MRD mounting system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA plate is a small part with one job: make a slide cut in one pattern accept an optic machined in another. Get it wrong and nothing else on the pistol matters.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is CNC machined from aircraft-grade aluminium with a hard-anodised finish, to Holosun's own tolerances rather than a third party's. The optic side is cut for the Holosun K footprint, the compact pattern Holosun uses on the 407K and 507K, and the slide side is shaped for the FN 509 MRD system.\u003c\/p\u003e\n\u003cp\u003eThis is the part to buy when a small K-series sight is going onto an FN 509 rather than a slide already milled for it. Two things worth knowing before you order: it will not take an RMR-footprint optic such as the 507C or 407C, and it will not take a 509T, which uses its own rear-lug pattern. Holosun does not state which screws are supplied with the plate, so plan on checking what arrives against the hardware already on your pistol.\u003c\/p\u003e\n\u003ch3\u003eWhy shooters choose the KPLT-FN509\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptic footprint\u003c\/strong\u003e — Holosun K, the pattern used by the 407K and 507K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHost\u003c\/strong\u003e — FN 509 optics-ready slides using FN's MRD system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachining\u003c\/strong\u003e — CNC machined to Holosun's own tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e — aircraft-grade aluminium with a hard-anodised finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine part\u003c\/strong\u003e — a Holosun component, not an aftermarket copy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat the KPLT-FN509 fits\u003c\/h3\u003e\n\u003cp\u003eIt fits FN 509 models built around FN's MRD optic-mounting system, and takes K footprint optics. For a Glock MOS host the \u003ca href=\"\/products\/holosun-k-mounting-plate-for-glock-mos-9mm-kplt-mos9mm\"\u003eKPLT-MOS9MM\u003c\/a\u003e is the right plate, for a CZ P-10 C the \u003ca href=\"\/products\/holosun-k-mounting-plate-for-cz-p10-c-kplt-czp10c\"\u003eKPLT-CZP10C\u003c\/a\u003e, and if your optic is a 509T rather than a K-series it needs the \u003ca href=\"\/products\/holosun-509-mounting-plate-for-fn-509-tactical-509plt-fn509t\"\u003e509PLT-FN509T\u003c\/a\u003e instead.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eOptic adapter plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptic footprint\u003c\/th\u003e\n\u003ctd\u003eHolosun K (407K, 507K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHost\u003c\/th\u003e\n\u003ctd\u003eFN 509 MRD optics-ready slides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAircraft-grade aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eHard anodised\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMachining\u003c\/th\u003e\n\u003ctd\u003eCNC machined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMPN\u003c\/th\u003e\n\u003ctd\u003eKPLT-FN509\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eMatch the plate to the slide and the footprint to the plate, and the rest of the fitting is four screws. \u003cstrong\u003eOrder the KPLT-FN509 today\u003c\/strong\u003e — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExplore more:\u003c\/strong\u003e \u003ca href=\"\/collections\/rmsc-footprint-red-dot-sights\"\u003eRMSc Footprint Red Dot Sights\u003c\/a\u003e, \u003ca href=\"\/products\/holosun-k-mounting-plate-for-507c-rmr-cut-slides-kplt-507c\"\u003eKPLT-507C\u003c\/a\u003e or browse all \u003ca href=\"\/collections\/holosun\"\u003eHolosun\u003c\/a\u003e\u003c\/p\u003e","brand":"Holosun","offers":[{"title":"Default Title","offer_id":42898723799120,"sku":"KPLT-FN509","price":44.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/4978\/1328\/files\/holosun-k-mounting-plate-for-fn-509-kplt-fn509-1.jpg?v=1788746457","url":"https:\/\/xtremetacticalgunparts.co.uk\/products\/holosun-k-mounting-plate-for-fn-509-kplt-fn509","provider":"Xtreme Tactical Gun Parts","version":"1.0","type":"link"}