I just put another pair of XS Big Dots on for a retired cop yesterday, and I am continually impressed with the response they generate.  Lately it seems we have been doing a pile of revolver work, but the last three weeks have seen Big Dots going on Glocks like crazy.  If you have been considering them, let me tell you why you might want to get them installed on your Glock. The Big Dots are as fast as any sight that is out there.  They make a...