SIG Sauer ROMEO5 Gen II Red Dot Sight 2 MOA Dot – SOR5101

SIG Sauer ROMEO5 Gen II Red Dot Sight 2 MOA Dot – SOR5101 – view 2

SIG Sauer ROMEO5 Gen II Red Dot Sight 2 MOA Dot – SOR5101 – view 3

SIG Sauer ROMEO5 Gen II Red Dot Sight 2 MOA Dot – SOR5101 – view 4

SIG Sauer

SIG Sauer ROMEO5 Gen II Red Dot Sight 2 MOA Dot – SOR5101

£229.99

Tax included. Shipping calculated at checkout.

In stockSKU: SOR5101

Estimated delivery within 7–10 business days
Secure checkout

Added to your basket. View basket →

VisaMastercardAmexPayPalApple PayGoogle Pay

Bundle & Save

Buy 2

Save 5%

£459.98

£436.98

£218.49 each

Description

The SIG Sauer ROMEO5 Gen II Red Dot Sight is the red dot sight that made a genuinely reliable optic affordable — and the Gen II refines a proven design with cleaner controls and SIG's full feature set. A crisp 2 MOA red dot sits in a compact 20mm tube, ideal for fast both-eyes-open shooting on AR-15s, .22 rifles, PCCs and rimfire builds.

SIG's MOTAC (Motion-Activated Illumination) powers the dot up the moment you move the rifle and shuts it down when it sits idle, stretching battery life toward the 50,000-hour mark on a single CR2032. It ships with both a low mount and an absolute co-witness riser, so it works straight out of the box on flat-top rifles, and it is waterproof (IPX7), fog- and shock-proof, backed by SIG's Infinite Guarantee. In stock for fast UK dispatch.

KEY FEATURES

2 MOA red dot reticle for precise aiming
MOTAC (Motion Activated Illumination) system
Compact and lightweight design
Durable aluminium housing
Multiple brightness settings including night vision compatibility
1× magnification for rapid target acquisition
Parallax-free with unlimited eye relief
Includes low mount and absolute co-witness riser

TECHNICAL SPECIFICATIONS

Magnification	1×
Objective Lens Diameter	20 mm
Reticle	2 MOA Dot
Reticle Colour	Red
Adjustment Type	MOA
Adjustment Increment	0.5 MOA
Total Elevation Travel	100 MOA
Total Windage Travel	100 MOA
Parallax	Parallax Free
Eye Relief	Unlimited
Illumination Settings	Day + Night Vision
Battery Type	CR2032
Battery Life	Up to 50,000 hours
Housing Material	Aluminium
Finish	Black
Waterproof Rating	IPX7
Shockproof	Yes
Fogproof	Yes
Weight	5.1 oz
Dimensions (L × W × H)	2.47" × 1.5" × 1.5"
Mount Type / Footprint	Picatinny (Low + Riser Mount Included)
Country of Origin	Assembled in USA
Warranty	SIG Sauer Infinite Guarantee
UPC	798681694600
MPN	SOR5101

WHAT'S INCLUDED

SIG Sauer ROMEO5 Gen II Red Dot Sight
Low Mount
Riser Mount (Absolute Co-Witness)
CR2032 Battery
Lens Covers
Adjustment Tool
User Manual

UK Delivery & Support

This SIG Sauer ROMEO5 Gen II 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.

How It Compares

Prefer a green dot? The ROMEO5 Gen II Green. Want the upgraded model? The ROMEO5 Gen II Elite. Need magnification too? The ROMEO5 + JULIET3 combo. Browse all SIG ROMEO red dots and our ROMEO range guide.

Frequently Asked Questions

What is MOTAC?
SIG's Motion-Activated Illumination — the dot powers on the instant it senses movement and shuts off when the optic sits still, conserving the battery without you touching a button.

Does it come with mounts?
Yes — both a low mount and an absolute co-witness riser are included, so it works on flat-top rifles out of the box.

Is it night-vision compatible?
Yes — it includes dedicated night-vision brightness settings alongside daylight levels.

What battery does it use and how long does it last?
A single CR2032, rated for up to 50,000 hours thanks to MOTAC.

What warranty does it carry?
SIG Sauer's Infinite Guarantee — a fully transferable lifetime warranty.