Reptilia 30mm ROF-90 Optic Mount for Trijicon RMR & SRO
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Fits Trijicon RMR and SRO, plus Holosun HS407, HE407, HS507, HE507 and HE508 series. Drop-in upgrade for 30mm Reptilia AUS and Geissele Super Precision mounts only. Not a Picatinny mount and not compatible with any other ring diameter.
Not sure it fits your rifle? Ask us before you order
The Reptilia ROF-90 is a 12 o'clock red dot mount for the Trijicon RMR & SRO, machined as a drop-in upgrade for 30mm Reptilia AUS and Geissele Super Precision scope mounts.
One ring diameter, one optic footprint. The ROF-90 puts the red dot directly above the scope at 90°, where your eye already is.
Reptilia call it Ring Optic Forward. The ROF-90 sits on the scope-ring cap of a 30mm mount and carries a miniature red dot at the 12 o'clock position rather than hanging it off a separate rail or an offset bracket. That keeps the dot close to the scope's centreline, so moving between magnified and unmagnified is a change of focus rather than a change of position.
It is machined from billet 7075-T6 aluminium and finished in MIL-STD Type III hardcoat anodising, at 34 g (1.2 oz). On a UK straight-pull AR-15 that earns its keep at the awkward end of the range card: the scope stays set for the shot you planned, the dot takes the one that appears at 25 m, and each keeps its own zero. Made in the USA.
Fits Trijicon RMR and SRO, plus Holosun HS407, HE407, HS507, HE507 and HE508 series. The ROF-90 is a drop-in upgrade for 30mm Reptilia AUS mounts and 30mm Geissele Super Precision mounts only — it is not a Picatinny mount, and it will not fit a scope ring of any other diameter. Ring diameter and optic footprint are both fixed on this listing: 30mm rings, Trijicon RMR & SRO footprint. Neither is adjustable, so check both against your own mount and optic before ordering.
| Fits | Trijicon RMR and SRO, plus Holosun HS407, HE407, HS507, HE507 and HE508 series — on a 30mm Reptilia AUS or Geissele Super Precision mount |
|---|---|
| Type | Ring-cap red dot mount, 90° (12 o'clock) |
| Material | Billet 7075-T6 aluminium |
| Finish | MIL-STD Type III hardcoat anodised — Black Anodized, Flat Dark Earth Anodized |
| Weight | 34 g (1.2 oz) |
| Made in | USA |
| Brand | Reptilia |
| MPN | 100-002 · 100-028 |
Same rifle, two sight pictures. Order the 30mm ROF-90 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: AR-15 Parts & Accessories or browse all Reptilia.
| Fits | Trijicon RMR and SRO, plus Holosun HS407, HE407, HS507, HE507 and HE508 series — on a 30mm Reptilia AUS or Geissele Super Precision mount |
|---|---|
| Type | Ring-cap red dot mount, 90° (12 o'clock) |
| Material | Billet 7075-T6 aluminium |
| Finish | MIL-STD Type III hardcoat anodised — Black Anodized, Flat Dark Earth Anodized |
| Weight | 34 g (1.2 oz) |
| Made in | USA |
| Brand | Reptilia |
| MPN | 100-002 · 100-028 |
| Category | Optic Mount |
| Barcode | 850002688238 |
£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.
Only if you are running a 30mm Reptilia AUS mount or a 30mm Geissele Super Precision mount. The ROF-90 sits on the ring cap of those mounts, so it is not a Picatinny mount and it will not fit a 30mm ring of another make or any other ring diameter. Measure or check your mount's specification before ordering.
It is cut for one footprint: Trijicon RMR and SRO, plus Holosun HS407, HE407, HS507, HE507 and HE508 series. A mount cut for another footprint will not accept your optic, because the screw positions and the recoil boss differ between them. If your red dot is not on that list, this is not the version you want.
They are three different mechanisms on the same footprint and the same 30mm ring diameter. This ROF-90 piggybacks the dot at 12 o'clock on top of the scope-ring cap, so the transition is a change of focus and the rifle stays where it is. The <a href="/products/reptilia-rof-45-30mm-trijicon-rmr-sro">30mm ROF-45</a> holds the dot at 45 degrees, so you roll the rifle instead. The <a href="/products/reptilia-rof-sar-30mm-trijicon-rmr-sro">30mm ROF-SAR</a> replaces the ring cap entirely rather than sitting on top of it, which carries the dot lower over the bore.
No, and that is the point. The dot is zeroed on its own for close range while the scope keeps the zero you set for distance, so you are not re-dialling between the two. Confirm both zeros after fitting, as you would with any mount that has come off and gone back on.
Optic mounts 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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