If you are asking about the Smith and Wesson Sigma SW9F, there is not a Meprolight Night Sights for SIG Sauer Pistols and Handguns model for that gun.
Unfortunately, the Gold Combat RL 2 is not in our compatibility list and by the eye test it doesn't look like any of our current commercial Kimber Hyperbright sights. It could share the dovetail dimensions we currently have. if you contact support@meprolight.us and provide me the dovetail base measurements, I can check against our inventory if anything would work.
The Meprolight Night Sights for SIG Sauer Pistols and Handguns will not fit the SAR9 or PSA 5.7.
They should fit.
Yes, they should.
They are not. They are white in the day and glow green in the night.
These sights will not work on the Sig 1911's. They use Novak style sights on most of their 1911's. These sights are meant for the Sig P-series pistols (P365, P226, P228, P229, P320, etc.)
MPN: ML10110F.S is a #8 and MPN: ML10129F.S is a #6.
Yes, you can use either MPN: ML10110Y and MPN: ML10110O.
Meprolight does not offer #10 sights for Sig Sauer handguns.