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Q&A for SIG SAUER Romeo1 1x30mm Mini Reflex Sight, 6 MOA Dot — 137 Questions & 135 Answers

Name SIG SAUER Romeo1 1x30mm Mini Reflex Sight, 6 MOA Dot (4.8)
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Q
Lee, guest, from VA, United States, asked on November 15, 2019

Will this fit on a Sig SAS P365?

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on November 29, 2019

No, it will not and there is no way to mount a red dot to that handgun without completely modifying the slide.

4 of 11 found the following answer helpful.
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Q
DorkyJesse, member, from WA, United States, asked on December 25, 2018

Will this fit on an FN 509 Tactical?

Expert Answer
A
Answered by Jonathan D., Gear Expert, from IL, United States, on April 22, 2019

No, it will not.

2 of 12 found the following answer helpful.
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Q
HP, guest, from NSW, Australia, asked on September 11, 2024

What is required to fit the SIG Romeo 1 to a Walther PDP?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on September 11, 2024

Because the Romeo 1 uses a proprietary footprint, it will not be compatible with the PDP. There are no aftermarket adapter plates that would allow you to install this optic. However, you can use the C&H Precision Weapons Optics Adapter Plate (linked below) and use that plate to install the Sig Romeo 1 PRO version, which uses the more common Deltapoint Pro footprint.
https://www.opticsplanet.com/c-h-precision-weapons-optics-adapter-plate-walther-defense-pdp-2-0.html?_iv_parent-gun-make=walther&_iv_gun-model=walther-pdp-2-dot-0&_iv_optic-cut=leupold-deltapoint-pro

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Q
Les, member, from MO, United States, asked on October 20, 2018

Will this sight work/mount on a Sig P938 ?

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on November 15, 2018

It should mount using this adapter: https://www.opticsplanet.com/sig-sauer-sor11004.html?_iv_gun-model=239 however the lens will be very close to the ejection port.

3 of 6 found the following answer helpful.
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Q
Brad, guest, from MI, United States, asked on April 14, 2023

Will this fit a smith and Wesson equalizer?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on April 21, 2023

The SIG SAUER Romeo 1 1x30mm Mini Reflex Sight will not fit the S&W Equalizer. Your Equalizer will fit any optic that uses the RMSc or K footprint such as the Sig Romeo Zero, Sig Romeo Zero Elite, Vortex Defender, Shield RMSc, Holosun 407K/507K, Holosun EPS Carry and more.

2 of 2 found the following answer helpful.
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Q
TearlessTom, member, from AL, United States, asked on April 10, 2023

Where is this item manufactured?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on April 11, 2023

Sig does not specify where the Romeo 1 is manufactured. I would recommend contacting them directly for more information.

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Q
Pete, guest, from TX, United States, asked on April 04, 2023

Beretta p40x compact or a ruger 5.7 . Will it fit on either of these?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on September 06, 2023

The SIG SAUER Romeo 1 1x30mm Mini Reflex Sight, 6 MOA Dot will not fit either of those handguns.

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Q
Nick, member, from NY, United States, asked on March 16, 2023

Will it fit glock 43x

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on August 23, 2023

The SIG SAUER Romeo 1 1x30mm Mini Reflex Sight, 6 MOA Dot will not fit the Glock 43X MOS.

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Q
Igor, guest, from IL, United States, asked on February 07, 2023

Will it fit SIG P320 M18? Thank you!

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on February 07, 2023

The SIG SAUER Romeo 1 1x30mm Mini Reflex Sight uses a proprietary footprint and is not compatible with the M18. You would need to use the Romeo 1 Pro model, which uses the Deltapoint Pro footprint, and can be found by using the link below:
https://www.opticsplanet.com/sig-sauer-romeo1pro-1x30mm-red-dot-sight.html

1 of 1 found the following answer helpful.
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Q
Betooliva, member, from FL, United States, asked on February 05, 2023

Does it fit in Sig P320 Xcompact?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on October 24, 2023

The Sig P320 Xcompact is compatible with the Sig Romeo 1 Pro at the link below. It will not fit the SIG SAUER Romeo 1.
https://www.opticsplanet.com/sig-sauer-romeo1pro-1x30mm-red-dot-sight.html

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Last updated 2025-11-12 UTC.