I added the Holosun 407K, with the green optics, to my SigSauer P365. Love the 6moa green dot on the 407K. I am in my mid 60's and don't see as well as I used to when I was younger. I had noticeable improvements in my groupings on my very first trip to the range. I plan on adding more Holosuns to my other pistols. They are easy to install, zero and look great.