I have 4 Glock front night sights that I'm not using. I switched to Fiber optic and all of these are less than 1 year old and are very bright. The one on the left is a Meprolight and is .169" tall. $20 The orange one is an Ameriglo and is .164" tall. $20 The other 2 are Dawson Precision and are Trijicon. One is .190" and one is .194". $25 each.