{"product_id":"holosun-509-mounting-plate-for-fnx-45-tactical-509plt-fnx45","title":"Holosun 509 Mounting Plate for FNX-45 Tactical","description":"\u003cp\u003eThe Holosun 509PLT-FNX45 is a steel adapter plate that carries a 509 footprint enclosed sight on the factory optic cut of an FNX-45 Tactical slide.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe 509 series uses a rear-lug footprint of Holosun's own, which does not match a factory RMR or RMSc cut. This plate is the piece that bridges the gap, and it is the only reason the two ever meet.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHolosun make it in steel with a corrosion-resistant finish, and both sets of fasteners come with it: the screws that hold the plate down to the slide, and the screws that hold the sight down to the plate. That matters more than it sounds, because a plate arriving without the second set is the most common way one of these ends up in a drawer. Holosun do not publish a weight for the plate.\u003c\/p\u003e\n\u003cp\u003eOn the pistol side it is cut for FNX-45 Tactical slides that left the factory optics-ready. On the optic side it takes the 509 footprint — the HS509T X2, the HE509T X2 and the HE509T-X2-GD. Be clear about what it does not do: an RMR-pattern sight such as a 507C or 407C will not sit on it, and neither will an RMSc-pattern 507K or 407K. Those are different bolt spacings and different lug arrangements, not a matter of forcing the screws.\u003c\/p\u003e\n\u003ch3\u003eWhy shooters choose the 509PLT-FNX45\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptic footprint\u003c\/strong\u003e — Holosun 509 rear-lug pattern — HS509T X2, HE509T X2 and HE509T-X2-GD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHost\u003c\/strong\u003e — FNX-45 Tactical slides with the factory optic cut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e — steel with a corrosion-resistant finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware\u003c\/strong\u003e — plate-to-slide and optic-to-plate screws supplied together\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible\u003c\/strong\u003e — RMR-pattern sights such as the 507C, or RMSc-pattern sights such as the 507K\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat the 509PLT-FNX45 fits\u003c\/h3\u003e\n\u003cp\u003eOne slide, one footprint: FNX-45 Tactical to Holosun 509. For other hosts, Holosun make the same plate for the \u003ca href=\"\/products\/holosun-509-mounting-plate-for-fn-509-tactical-509plt-fn509t\"\u003eFN 509 Tactical\u003c\/a\u003e, the \u003ca href=\"\/products\/holosun-509-mounting-plate-for-glock-mos-9mm-509plt-mos9mm\"\u003eGlock MOS 9mm\u003c\/a\u003e and the \u003ca href=\"\/products\/holosun-509-mounting-plate-for-cz-p10-509plt-czp10\"\u003eCZ P10\u003c\/a\u003e, plus a version for \u003ca href=\"\/products\/holosun-509-mounting-plate-for-507c-rmr-cut-slides-509plt-507c\"\u003e507C and RMR-cut slides\u003c\/a\u003e. If the 509T is going on a rail rather than a slide, the \u003ca href=\"\/products\/holosun-509t-picatinny-mount-1-63in-lower-1-3-509mnt-1-63-pic\"\u003e509T Picatinny mount\u003c\/a\u003e is the part you want.\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 509 (509T)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eFNX-45 Tactical optics-ready slides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSteel, corrosion-resistant finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHardware\u003c\/th\u003e\n\u003ctd\u003ePlate-to-slide and optic-to-plate screws included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHolosun\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMPN\u003c\/th\u003e\n\u003ctd\u003e509PLT-FNX45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eA small part, but the one that decides whether the sight goes on at all. \u003cstrong\u003eOrder the 509PLT-FNX45 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\/optic-mounts\"\u003eOptic Mounts\u003c\/a\u003e, \u003ca href=\"\/products\/holosun-509-mounting-plate-for-507c-rmr-cut-slides-509plt-507c\"\u003e509 Plate for RMR-Cut Slides\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":42898724323408,"sku":"509PLT-FNX45","price":44.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/4978\/1328\/files\/holosun-509-mounting-plate-for-fnx-45-tactical-509plt-fnx45-1.jpg?v=1788746461","url":"https:\/\/xtremetacticalgunparts.co.uk\/products\/holosun-509-mounting-plate-for-fnx-45-tactical-509plt-fnx45","provider":"Xtreme Tactical Gun Parts","version":"1.0","type":"link"}