I just bought a new P10c for a great price, and like the pistol a lot. That might be the best pistol $425 can buy right now OTD. It is not OR, standard sights and the gun was made in the Czech Republic it seems in 2021 (serial starts with "F"). I have Apex trigger kit for it on the way. The gun shoots to point of aim, but I want night sights on it. Does anyone know what the difference between XS night sights listed on CZ Webstore ( XS P-10 NIGHT SIGHT SET #3 STANDARD, SKU 40153; XS P-10 NIGHT SIGHT SET #4 STANDARD, sku: 40154; XS P-10 NIGHT SIGHT SET #2 STANDARD, sku: 40152). I just do not want to mess with the heights, etc. Any info would be appreciated.