The reason I ask is this is a gun so simple to take apart to bare frame and reassemble in 10 or 15 minutes with no special tools or training. I'm not trying to make fun of you guys that are Glock Armorer's and have sight tools and training on other guns and can do minor repairs. I have done everything to my Glocks except replace the sights, all my Glocks have the sights from fractory I like so never had the need to remove and replace with another sight. But I have heard one or two here that seemed to think it was something really special, but am I wondering if I am jaded because of very strong background in small instrument repair, machine shop, electronics, optics and being around guns all my life. So light your flame throwers and have at it fellows, but do give some actual info please.