SIG Sauer ROMEO5 Gen II Green Dot Sight 2 MOA Dot
£229.99
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SIG Sauer ROMEO5 Gen II Green Dot Sight 2 MOA Dot
£229.99
At a glance
- Sight type
- Enclosed
- Reticle
- Single dot
- Dot size
- 2 MOA
- Fits
- Rifle
- Delivery within 10 business days
- Estimated delivery:
- 30-day returns
- UK-based specialist support
- Pay in 3 interest-free payments of £76.66 with Klarna
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Details
Description
SIG Sauer ROMEO5 Gen II Green Dot Sight is the Gen II with a green emitter behind the same 2 MOA reticle. Against foliage or a bright backstop, green is what some shooters catch first; everything else is standard Gen II — a side-loading CR2032 you can change on the gun, MOTAC motion activation and around 40,000 hours of runtime.
How It Compares
Prefer a red dot? See the ROMEO5 Gen II (red). Want a ballistic circle-dot? The ROMEO5XDR. Browse more green optics, rifle dot sights and the SIG Sauer range.
Ideal For
- Shooters who lose a red dot against green backgrounds
- AR-15 and carbine builds
- Both-eyes-open shooting at close range
- A base optic to pair with a JULIET magnifier later
Key Features
- 2 MOA green dot in a 1x20 mm tube
- MOTAC motion activation; around 40,000 hours
- Side-loading CR2032 — no re-zero
- 10 daylight and 2 night-vision settings; 0.5 MOA clicks
- IPX7 waterproof and fog-proof; low mount and co-witness riser included
Technical Specifications
- SKU / MPN / UPC: SKU SOR5102 / MPN SOR5102 / UPC 798681694617
- Reticle: 2 MOA green dot
- Magnification: 1x, parallax-free, unlimited eye relief
- Objective: 1x20 mm
- Brightness settings: 10 daylight + 2 night-vision, MOTAC motion activation
- Windage / elevation per click: 0.5 MOA
- Battery: 1 × CR2032, side-loading
- Battery life: ~40,000 hours
- Housing: Aluminium
- Waterproof: IPX7, fog-proof
- Mount: Picatinny — low mount and co-witness riser included
What's Included
- SIG Sauer ROMEO5 Gen II green dot sight
- Low mount and co-witness riser
- CR2032 battery
Why buy from Red Dot Sight UK
A UK specialist in red dot sights, holographic sights and magnifiers from Trijicon, EOTech, Holosun and SIG Sauer — genuine optics, secure checkout and UK-based support.
The detail
Technical Specifications
| Sight type | Enclosed |
|---|---|
| Dot colour | Green |
| Reticle | Single dot |
| Dot size | 2 MOA |
| Fits | Rifle |
| Brand | SIG Sauer |
| Type | Green Dot Sight |
| SKU | SOR5102 |
Fitment
Compatibility
Mounting Footprint
Confirm the optic's footprint matches your firearm's cut or plate.
Rail Compatibility
Pair with a matching Picatinny mount for rifle and carbine platforms.
Always confirm your firearm's optic cut or rail matches the footprint before purchase. Our guide to red dot sight footprints explains how to match an optic to your firearm. If unsure, contact our team for fitment advice.
Complete Your Setup
Help & guidance
Product FAQs
Should I choose the ROMEO5 Gen II in red or green?
Green can be easier to see in daylight for some shooters, particularly against foliage or a bright backstop. On the SOR5102 the reticle size, runtime, mounts and housing are identical to the red version.
Do I need to buy a mount for the ROMEO5 Gen II Green?
No, a low mount and a co-witness riser are included with the SOR5102. Both are Picatinny.
How long does the battery last in the ROMEO5 Gen II Green?
Around 40,000 hours from one side-loading CR2032, with MOTAC shutting the dot down when the rifle is idle. The battery changes on the gun without a re-zero.
What size dot does the SIG Sauer ROMEO5 Gen II Green have?
It has a 2 MOA green dot in a 1x20 mm tube. That suits both-eyes-open shooting at close range.
What battery does the ROMEO5 Gen II SOR5102 take?
It takes one CR2032 battery, loaded from the side so there is no need to re-zero.
How many brightness settings does the ROMEO5 Gen II Green have?
The SOR5102 has 10 daylight settings and 2 night-vision settings, with MOTAC motion activation.
Is the ROMEO5 Gen II Green night-vision compatible?
Yes, it has 2 dedicated night-vision brightness settings in addition to its 10 daylight settings.
Is the ROMEO5 Gen II Green waterproof?
Yes, the SOR5102 is IPX7 waterproof and fog-proof, in an aluminium housing.
What magnification and eye relief does the SOR5102 offer?
It is 1x with a 20 mm objective, parallax-free and with unlimited eye relief.
What is the click value on the ROMEO5 Gen II Green?
Windage and elevation adjust in 0.5 MOA per click.
What comes in the box with the ROMEO5 Gen II Green?
The box contains the SIG Sauer ROMEO5 Gen II green dot sight, a low mount and co-witness riser, and a CR2032 battery.
How quickly does the ROMEO5 Gen II Green ship in the UK?
Estimated UK delivery is 10 business days. It ships as genuine UK stock, so there are no import fees to pay on arrival. Checkout is secured by Shopify.
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Further reading
Guides picked for this optic - the brand range, the format, and how to set it up.
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Shipping, Returns & Warranty
Orders are dispatched from the UK. Full details, options and timescales are on our shipping policy.
If something isn't right, our returns policy explains how to arrange a return or exchange.
Every order is covered by our 30-day returns policy and your statutory consumer rights. Some products are also supplied with a manufacturer warranty; that cover is provided by the manufacturer rather than by Red Dot Sight UK and varies by brand.