Reptilia 34mm ROF-45 Offset 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 34mm Reptilia AUS and Geissele Super Precision mounts only. Not a Picatinny mount.
Not sure it fits your rifle? Ask us before you order
The Reptilia ROF-45 is a 45-degree offset red dot mount for the Trijicon RMR and SRO, machined as a drop-in upgrade for 34mm Reptilia AUS and Geissele Super Precision scope mounts.
Roll the rifle, take the shot, roll back. The dot lives at 01:30, clear of the scope and clear of the rail.
The ROF-45 mounts on the scope-ring cap of a 34mm mount and holds a miniature red dot at 45°, the 01:30 position. Nothing is added to the receiver rail, nothing hangs off the handguard, and the dot does not sit in front of the scope's objective — it simply appears when you cant the rifle.
Billet 7075-T6 aluminium, MIL-STD Type III hardcoat anodised, 27 g (0.95 oz), made in the USA. On a UK straight-pull AR-15 the 45-degree position suits shooters who would rather roll the rifle than change head position: cheek stays down, shoulder stays loaded, and the close target is dealt with without touching the magnified optic.
Fits Trijicon RMR and SRO, plus Holosun HS407, HE407, HS507, HE507 and HE508 series. It is a drop-in upgrade for 34mm Reptilia AUS mounts and 34mm Geissele Super Precision mounts only — not a Picatinny mount, and not compatible with any other ring diameter. Ring diameter and optic footprint are both fixed here: 34mm rings, RMR footprint. If you would rather have the dot directly above the scope, the 34mm ROF-90 is the 12 o'clock version of the same idea.
| Fits | Trijicon RMR and SRO, plus Holosun HS407, HE407, HS507, HE507 and HE508 series — on a 34mm Reptilia AUS or Geissele Super Precision mount |
|---|---|
| Type | Ring-cap red dot mount, 45° (01:30 position) |
| Material | Billet 7075-T6 aluminium |
| Finish | MIL-STD Type III hardcoat anodised — Black, Flat Dark Earth Anodized |
| Weight | 27 g (0.95 oz) |
| Made in | USA |
| Brand | Reptilia |
| MPN | 100-017 · 100-031 |
Cant the rifle and the dot is there. Order the 34mm ROF-45 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 34mm Reptilia AUS or Geissele Super Precision mount |
|---|---|
| Type | Ring-cap red dot mount, 45° (01:30 position) |
| Material | Billet 7075-T6 aluminium |
| Finish | MIL-STD Type III hardcoat anodised — Black, Flat Dark Earth Anodized |
| Weight | 27 g (0.95 oz) |
| Made in | USA |
| Brand | Reptilia |
| MPN | 100-017 · 100-031 |
| Category | Optic Mount |
| Barcode | 850002688276 |
£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 a 34mm Reptilia AUS mount or a 34mm Geissele Super Precision mount. It mounts on the ring cap of those mounts, so it is not a Picatinny accessory and it will not fit a ring of any other diameter.
One footprint only: Trijicon RMR and SRO, plus the Holosun HS407, HE407, HS507, HE507 and HE508 series. Screw spacing and the recoil boss differ between footprints, so a mount cut for a different optic will not accept yours.
At 45 degrees you cant the rifle to find the dot, which keeps your cheek on the stock and the scope's line of sight clear. At 12 o'clock the dot is directly above the scope and found by lifting the eye instead — see the <a href="/products/reptilia-rof-90-34mm-trijicon-rmr-sro">34mm ROF-90</a>. Both of those sit on top of the mount's ring cap. The <a href="/products/reptilia-rof-sar-34mm-trijicon-rmr-sro">34mm ROF-SAR</a> is the third option and works differently again: it replaces the ring cap entirely, carrying the dot lower over the bore.
It is machined for the 01:30 position as supplied, so the dot appears when the rifle is canted to the left. Reptilia do not publish a mirrored version, so check with us before ordering if you need it the other way.
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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