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Questions & Answers
Is the Romeo4m compatible with T2 mounts? Expert Answer

No, the Romeo4 uses proprietary mounts. The CR2032 powered Romeo5 models are compatible with Aimpoint H1/T1 style mounts.

by Jonathan D., Gear Expert, June 6, 2019
Is this compatible with the Juliet3 magnifier or do you have to change the mount? Expert Answer

Yes, the Romeo4M is compatible with any of the Sig Sauer magnifiers.

by Armando R., Gear Expert, March 17, 2020
Customer Reviews
Helpful Positive Review
Great Red Dot by CM, April 16, 2020
I was unsure about buying this red dot at first bc I wanted more of a reflex sight on my M4, but I quickly realized I made the right choice. This sight is easy to attach, made very well, and extremely easy to use. This was my first time buying and at...
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1/1 found this helpful
Helpful Positive Review
Sig Sauer Romeo 4M by Ron, Verified Owner, March 16, 2017
Optics Planet has become my go to site!!! I love the Romeo 4M, the quality is there - it's a Sig - and it was shipped fast and at the best price I could find. Installation was fast and easy, it is super light and has a nice small footprint versus m...
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1/1 found this helpful
Helpful Negative Review
Huge disappointment by JP, Verified Owner, November 7, 2018
I purchased the Romeo 4M from Optics Planet October 18th. I purchased it because of the deal Optics Planet had going on for it and also how it was touted as being a quality military optic used by the FBI. When I finally received the optic on the 2...
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3/21 found this helpful
Most Recent Reviews
Great Optic by Texshooter, March 27, 2020
Purchased this optic because I already had one. Never had an issue with it. Great clarity, crisp red dot and very long battery life. I mounted it on and it’s been running perfect. If your looking for a great red dot at a great price, this is the one...
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Most Recent Reviews
Romeo 4M duty grade high quality optic by nbhum, Verified Owner, March 6, 2020
Sig amazes once again. I currently own a Sig Romeo 5 and Romeo 4t both of which have never failed me. The Sig Romeo 4M is a great alternative to the 4t at about half the price. Similar features less reticle options on the 4m but really you need the C...
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Most Recent Reviews
basically a civilian Aimpoint by David Welch, Verified Owner, December 20, 2018
As a weekend warrior and firearm enthusiast. I cannot recommend these enough. Very well built and a great price. I have a T-2, eotech 3-4 and a couple of MRO’s on different items. These are (from a civilians standpoint) every bit as good with more ...
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Read All 8 Reviews

Product Discontinued by Manufacturer

SIG SAUER Romeo4M 1X20 M-Spec 2 MOA has been discontinued by SIG SAUER and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Red Dot Sights & Accessories, Red Dot Sights yourself to try and find the perfect replacement for you!

Product Info for SIG SAUER Romeo4M 1X20 M-Spec 2 MOA

Bring premium precision to the field by equipping this Sig Sauer Romeo 4M 1x20 M-Spec .5MOA. These Red Dot Sights by SIG SAUER offer unlimited eye relief for the most comfortable shooting experience possible. Each Sig Sauer Romeo 4M 1x20mm M-Spec Waterproof Red Dot Sight is designed with ultra-wide broadband, anti-reflection Spectracoat lens coatings that provide bright and clear images throughout the optic. The combination of a highly-efficient LED illumination system and the MOTAC (Motion Activated Illumination System) greatly boost the lifetime of your battery, providing over 50,000 hours of power. Mount this Sig Sauer Romeo 4M 1x20 M-Spec Red Dot Sight to improve nearly every aspect of your shot game.image

Features of SIG SAUER Romeo4M 1x20mm Red Dot Sight M-Spec .5MOA SOR41301

  • Stealth ID deflection armor trapezoidal surfacing breaks up the shape and visibility of the optic along with pistol slide serrations and grip checkering to add function to the form.
  • Highly efficient, ultra-wide broadband, anti-reflection Spectracoat lens coatings reduce surface reflections to extremely low levels across the entire visible spectrum providing superior light transmission.
  • Unlimited eye-relief allows you to acquire the aiming point and the target regardless of the position of your eye behind the sight
  • Dual reticle option, on select models, toggle between 2 MOA red dot or circle dot (2 MOA red dot with 65 MOA circle)
  • Utilizes an ultra-efficient red LED illumination system for daylight visibility with extended runtime and mil-spec objective coatings to limit downrange light leakage in tactical situations.
  • Features MOTAC (Motion Activated Illumination System) that powers up when it senses motion and powers down when it does not. Provides for optimum operational safety and enhanced battery life
  • 50,000+ hour battery life and the readily available CR2032 battery is side-loading, allowing for quick battery replacement.
  • Extremely strong and lightweight aircraft grade CNC Aluminum housing ensures a lifetime of reliable service.
  • Dependable waterproof (IPX-7 rated for complete water immersion up to 1 atmosphere) and fog-proof performance.
  • Covered by the SIG SAUER Infinite Guarantee and Electronics Limited Warranty.

Package Contents:

  • SIG SAUER Romeo4M 1x20mm Red Dot Sight M-Spec .5MOA SOR41301
  • M1913 Picatinny low mount
  • M1913 Picatinny 1.41in absolute co-witness mount

Red Dot Accessories

160 / 60
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Red Dot Sight Magnifier

115 / 15
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Related Products to SIG SAUER Romeo4M 1X20 M-Spec 2 MOA

SIG SAUER Romeo4M 1X20 M-Spec 2 MOA Unavailable & Discontinued Models

List of Unorderable Models

  • Demo, SIG SAUER Romeo4M Red Dot 1x20mm M-Spec .5MOA SOR41301 , MPN: SOR41301-DEMO , Code: SD9-RD-SOR41301-DEMO
  • SIG SAUER Romeo4M Red Dot 1x20mm M-Spec .5MOA SOR41301 , MPN: SOR41301 , UPC: 798681545780 , Code: SD9-RD-SOR41301-EE
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