I don't see it limited by the top magnification of your 2-7, but maybe a bit by the exit pupil for evening light.

How about this one?:

https://www.trijicon.com/na_en/products/product3.php?pid=TR22-1

Also available in green, my favorite for illuminated:

https://www.trijicon.com/na_en/products/product3.php?pid=TR22-1G

What fresh Hell is this?