A quick post on night sights for the G40 since it’s new and has a slightly unique set up. The G40 MOS takes the same size sights as the G20 due to the thicker slide. The MOS cut out causes the OEM adjustable sights to hang off the back of the slide a bit. So some of the after market sight will also hang. While not a functional issue since I was replacing the sights anyway I wanted to replace them with sights that didn’t hang.
I went with Trijocon’s “Bright and Tough” green three dot night sights. Specifically the GL04. I use the same sights on my other Glocks and they will not hang off the back and are functional and simple.