Hi guys. Hope I’m posting in the right sub. I’m having an issue. I have a brand new Glock 21 Gen 5 and I’m looking to put the right height night sights on it. I called Glock and they told me that the standard stock sight height is 6.5mm rear and 4.1mm front. The issue that I’m having is, the brand new untouched Glock that I bought from the factory has the rear sight marked with a larger bar over a smaller bar meaning 6.1mm right? Which is the true front and rear stock heights for the g21.5? 6.5mm or 6.1mm - and what about fronts. Anyone have the same issue? Thank you for your time.