The SIG Sauer ROMEO4T-PRO is a fully enclosed, tube-style red dot built to the T-series standard — a rugged 7075-T6 aluminium housing, IPX8 waterproofing, and a sealed window that shrugs off rain, mud and dust. It is designed for duty and hard-use rifles where reliability is non-negotiable.
Its standout feature is the selectable Ballistic Circle Dot reticle: a 2 MOA centre dot with circle and holdover elements you can switch between for fast acquisition or longer-range holds. SIG's MOTAC motion activation and a single AAA battery deliver up to 50,000 hours of runtime, and it ships complete with flip covers, an anti-reflection device and a spacer kit for the right co-witness height. In stock for fast UK dispatch.
Finish: Black — also available in Flat Dark Earth.
KEY FEATURES
- Ballistic Circle Dot reticle system (multi-mode)
- Fully enclosed red dot sight (tube-style design)
- MOTAC (Motion Activated Illumination) system
- AAA battery with up to 50,000 hours runtime
- 9 daylight + 3 night vision brightness settings
- 7075-T6 aluminium housing (T-series upgrade)
- IPX8 waterproof and fogproof
- Parallax-free with unlimited eye relief
TECHNICAL SPECIFICATIONS
| Magnification |
1× |
| Objective Lens Diameter |
20 mm |
| Reticle |
Ballistic Circle Dot (red), 2 MOA centre dot |
| Adjustment Increment |
0.5 MOA |
| Elevation / Windage Range |
100 MOA / 100 MOA |
| Parallax / Eye Relief |
Parallax free / Unlimited |
| Illumination Settings |
9 Day / 3 Night Vision |
| Battery |
AAA — up to 50,000 hours |
| Housing |
7075-T6 Aluminium, IPX8 |
| Finish |
Black |
| Weight |
7.4 oz |
| Mount |
Picatinny (Hex Bolt + Spacer System) |
| MPN / UPC |
SOR44101 / 798681671397 |
| Warranty |
SIG Sauer Infinite Guarantee |
WHAT'S INCLUDED
- SIG Sauer ROMEO4T-PRO Red Dot Sight
- Hex Bolt Mount
- Spacer Kit
- AAA Battery
- Flip-Up Lens Covers
- Anti-Reflection Device (ARD)
- Adjustment Tool
- User Manual
UK Delivery & Support
This SIG Sauer ROMEO4T-PRO is UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based aftersales support and SIG Sauer's Infinite Guarantee.
Frequently Asked Questions
What is the Ballistic Circle Dot reticle?
A selectable reticle with a 2 MOA centre dot plus circle and holdover elements, letting you switch between a clean dot for speed and added references for longer-range holds.
What battery does it use?
A single AAA battery — inexpensive and widely available — rated for up to 50,000 hours thanks to MOTAC motion activation.
Is it night-vision compatible?
Yes — it has 3 dedicated night-vision settings alongside 9 daylight levels.
What comes in the box for mounting?
A hex-bolt Picatinny mount with a spacer kit for co-witness height, plus flip-up lens covers and an anti-reflection device (ARD).
