Radian Guardian Optic Guard for Glock MOS
Mix and match across the range: 2 items save 5%, 3 save 10%, 4 or more save 15% on your whole basket.
Fits Glock MOS-cut slides. Choose the version matching your optic footprint (Trijicon RMR / Holosun EPS / Holosun 507C Comp). Confirm your optic footprint before ordering.
Not sure it fits your rifle? Ask us before you order
The Radian Guardian is a machined aluminium optic guard for Glock MOS pistols, mounting to the MOS optic cut around a Trijicon RMR, Holosun EPS or Holosun 507C Comp footprint red dot.
A machined aluminium shroud that wraps and protects your pistol red dot — turning a fragile optic into a duty-ready one.
The Radian Guardian is a hardcoat-anodised aluminium optic guard for Glock MOS pistols. It surrounds the red-dot sight on three sides, taking impacts, drops and holster wear that would otherwise crack an exposed emitter or knock zero. It also serves as a rugged rear cocking surface — rack the slide one-handed off a belt or barricade. Machined to the specific optic footprint so the fit is exact and the sight window stays clear.
Fits Glock MOS-cut slides and mounts using the MOS optic screws. Each version is machined for a specific optic footprint — Trijicon RMR, Holosun EPS or Holosun 507C Comp — so select the one matching your sight and confirm your optic's footprint before ordering. It is not a universal shroud, and a mismatched footprint will not mount. With backup iron sights built into the same shroud it becomes the Guardian+Six.
| Platform | Glock MOS pistols |
|---|---|
| Fits | Glock MOS-cut slide — Trijicon RMR, Holosun EPS or Holosun 507C Comp footprint |
| Type | Pistol optic guard / shroud |
| Material | Aluminium |
| Finish | Hardcoat anodised |
| Mount interface | Glock MOS optic screws |
| Made in | USA |
| Brand | Radian Weapons |
| MPN | G1001 · G1002 · H0021 |
Armour for the optic you rely on. Order the Guardian 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: browse all Radian Weapons.
| Platform | Glock MOS pistols |
|---|---|
| Fits | Glock MOS-cut slide — Trijicon RMR, Holosun EPS or Holosun 507C Comp footprint |
| Type | Pistol optic guard / shroud |
| Material | Aluminium |
| Finish | Hardcoat anodised |
| Mount interface | Glock MOS optic screws |
| Made in | USA |
| Brand | Radian Weapons |
| MPN | G1001 · G1002 · H0021 |
| Category | Optic Mount |
| Shipping weight | 0.05 kg |
| Barcode | 810098420105 |
£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.
It fits Glock MOS-cut slides and mounts using the MOS optic screws, so the pistol side is straightforward. The optic side is not universal — each version is machined for one footprint, and this listing covers the Trijicon RMR, Holosun EPS and Holosun 507C Comp. Confirm which footprint your red dot uses before ordering, because a mismatched version will not mount.
It wraps the red dot on three sides, so impacts, drops and holster wear land on machined aluminium rather than on the sight housing or the glass. That is what turns an exposed pistol optic into something that keeps its zero through hard use. The rear face doubles as a rugged racking surface, so you can cycle the slide one-handed off a belt, a heel or a barricade.
The <a href="/products/radian-guardian-six-optic-guard-sights-glock-mos">Guardian+Six</a> is the same idea with backup iron sights built into the shroud, so you keep a usable sight picture if the dot ever fails. This version is the guard alone, which keeps the unit simpler and the sight window clear if you already have irons on the slide or do not want them. The two listings cover different optic footprints, so check yours against the one you are buying — both sit under <a href="/collections/radian-weapons">Radian Weapons</a>.
It mounts on the Glock MOS optic screws with the hardware supplied, which means the optic has to come off and go back on as part of the job. Because you are removing the sight, re-check and confirm your zero afterwards rather than assuming it has held. Torque the optic screws to the figure your optic maker specifies.
Optic guards are sent from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and you’ll get tracking by email when it ships. If a part turns out to be the wrong fit, see our returns policy or <a href="/pages/contact">contact us</a> and we’ll help sort it.
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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