Holosun K Mounting Plate for 507C/RMR Cut Slides
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The Holosun KPLT-507C is a genuine Holosun adapter plate that lets a K footprint optic sit on a pistol slide already machined for the 507C or Trijicon RMR pattern.
A K footprint sight is narrower than an RMR one, so it cannot simply be dropped into a larger cut. This plate is the piece of metal that bridges the gap, and both sets of screws come with it.
It is a hard anodised plate cut to Holosun's own tolerances, drilled underneath for the 507C and RMR screw pattern and on top for the K pattern used by the 407K, 507K, EPS and EPS Carry. Plate-to-slide and optic-to-plate screws are both supplied, so nothing else has to be sourced before the optic can go on.
This is the part to reach for when a slide has already been cut for a full-size sight and the optic you want to run is one of the small enclosed or open K series bodies — a build on an RMR-cut host, or moving a K series sight between guns without paying to have another slide machined. Two things it is not: it does not adapt RMR footprint optics such as the 507C or 407C themselves, and it does not fit the 509 rear-lug pattern. Holosun publish no weight or dimensions for the plate.
It goes on any slide already cut for the 507C or RMR pattern and carries a K footprint optic above it. Other hosts take their own plate in the same family — the Glock MOS 9mm, the FN 509 and the CZ P10 C versions.
| Type | Optic adapter plate |
|---|---|
| Optic Footprint | Holosun K footprint / RMSc pattern (407K, 507K, EPS, EPS Carry) |
| Host Cut | 507C / Trijicon RMR footprint |
| Finish | Hard anodised |
| Hardware | Plate-to-slide and optic-to-plate screws included |
| Brand | Holosun |
| MPN | KPLT-507C |
Get the plate right and a small optic sits square and low on a slide that was cut for a larger one. Order the KPLT-507C today — 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.
Explore more: Optic Mounts, KPLT for Glock MOS 9mm or browse all Holosun.
| Brand | Holosun |
|---|---|
| Part no. | KPLT-507C |
| Category | Optic Mount |
| Barcode | 810047071167 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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