Holosun K Mounting Plate for Glock MOS 9mm
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The Holosun KPLT-MOS9MM is a genuine Holosun adapter plate that fits a K-footprint optic to a Glock MOS optics-ready slide in 9mm.
A factory MOS cut and a small K-series sight do not speak the same language, and this precision-machined plate is the piece of metal that translates between them.
Holosun machines the plate from 7075-T6 aluminium and finishes it hard-anodised, keeping it low-profile so the optic sits as close to the slide as the MOS system allows. It drops into the Glock MOS plate recess in the same way as the factory plates and presents the Holosun K footprint on top.
Holosun states compatibility with its 407K and 507K sights on this plate, and that is the claim we will make for it. It is not the part for an RMR-footprint optic such as a 507C or 407C, and it is not the part for a 509T, which uses its own rear-lug pattern. Check what your slide is cut for before ordering, because a MOS slide and a directly milled slide are not the same job.
A Glock MOS slide in 9mm on one side, a Holosun K-footprint sight on the other. Other hosts have their own plates: the KPLT-FN509 for the FN 509, the KPLT-CZP10C for the CZ P-10 C, and the KPLT-507C for a slide already cut to the 507C or RMR pattern. If your optic is a 509T rather than a K-series, the 509PLT-MOS9MM is the right plate instead.
| Type | Pistol optic adapter plate |
|---|---|
| Optic Footprint | Holosun K footprint |
| Stated Optic Compatibility | Holosun 407K and 507K |
| Host | Glock MOS optics-ready slides, 9mm |
| Material | 7075-T6 aluminium |
| Finish | Hard-anodised |
| Profile | Precision-machined low-profile |
| MPN | KPLT-MOS9MM |
The right plate is a five-minute job; the wrong one is a returned parcel. Order the KPLT-MOS9MM 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, RMSc Footprint Red Dot Sights or browse all Holosun.
| Brand | Holosun |
|---|---|
| Part no. | KPLT-MOS9MM |
| Category | Optic Mount |
| Barcode | 810047071136 |
£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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