Good co-witness - Night Fision GLK11YGXG Costa Ludus Night Sight Set Glock 17,17L,19,22-28,31-

These sights worked out perfect for my set up…if you have a slide that is milled low, like a Brownells or Zev…these will peak right over the back of the RDS without taking up too much of your window..previously had trijicon suppressor height night sights on but they were just a little too high and covered too much window…these however are perfect.