SIG SAUER Romeo-X Compact Pistol-Mounted Reflex Sight | Rugged Durable Aluminum Lightweight Waterproof MOTAC Open Sight with 15 Illumination Settings

I'm not new to using red dots, but this was the first one I've bought. For use on my gen 1 Sig 365 XL, I needed a red dot that included a rear sight and with the Sig, it's a correct match for the front sight. If I had a gen 2, which has a rear sight that's separate from the sight plate, I likely would have chosen the enclosed version, which does not have the built in rear sight. The sight was easy to install, easy to get zero'd and as long as you've got some decent training, easy to pick up the dot immediately. Please make sure you use the correct screws for your gun and that you've properly torqued them. There are three sets of screws included.

great red dot sight awesome sight picture and clear reticle fits perfect on my Legion 365

Great Red dot sight for one of my Sigs. Simple functionality, easy to zero…. Well made.

This is a great sight!!! I have one on my Sig P365 9mm and I put one on my wife's Sig P365 380. Easy to remove existing plate and install.

Super nice compact green dot. Fits Sig 365-380 just fine. Very easy to install, use and sight in. Remember to push the optic slightly forward as you tighten mounting screws. Used a torque screwdriver to torque screws. But they give you wrench, so you can just wing it. Use a bore sighter to get close, then tweak it as needed. I did not buy the sig sight-in app. Green dot very bright and adjustable.

The circle setting for the red dot wasn't right. It looked more like a coil spring of 3 circles. I contacted Sig customer support. Their response time to emails was very slow. They requested photos from my iPhone of the red dot circle. It's hard to take a clear photo of a red dot. They only replied once a day in the morning. After 3 days of back and forth I was told "After reviewing the image that was sent over I can not see the issue you are describing. If you would still like to send it in for review we can do so but I can not guarantee you that it will be replaced." I had others look at this sight to make sure it wasn't a vision problem I was having. They saw the same thing I did. Sig didn't show any interest in my problem and said they couldn't guarantee that it would be be replaced. That's when I lost confidence in them and decided to return the product and buy another brand that works great.

Great sight very easy to install and use

It seems high quality, the glass has a blue tint which is annoying but many have tint. I have astigmatism and the dot is crisp for me over my Trijicon RMR and SRO. I mounted this on a ARC division Glock 43 slide and it fits correctly. If you get this optic you can use standard sights. I don't like that it has a non standard battery like every other optic that uses CR 2032 batteries. So you'll have to stock up on a new size. I've banged it around and it's fine, it seems sturdy, it seems reliable. It claims it's assembled in the United States and it comes with a unconditional lifetime warranty, but I'm skeptical Sig will honor it with their now terrible reputation for QC in their products but who knows. I chose this over a EPS carry, maybe wish I didn't idk I personally have had only bad luck with holosun elite optics and am not buying a a RMRcc, so this seemed like a shot to give. Also this is not the enclosed version, it is a standard open emitter which is what I wanted because I don't really personally trust closed emitters as I have also had bad luck with an aimpoint ACRO and this sig optic is going on my carry gun which I'm not too worried about not being able to use the optic if it gets wet.