I took a Glock 21 I bought cheap to Glock in Smyrna today. It's a 2nd gen and it came with a "New York" (8lb pull) trigger and a 10 round mag. Being a 2nd gen there was no rail for mounting a tactical light. I called last week to ask what could be done to the pistol so that it would serve my purposes and was told to bring it in. I arrived at Glock at about 11am and waited 45 minutes for the armorer to do the work on my gun. What I got back was my old 21 with a new frame (now has rail) and all new internals including an extended slide release. He also replaced the trigger group with a new 5.5lb trigger group. All the internals in the slide were removed, cleaned and replaced with brand new parts. While they were at it they asked if I wanted night sights for $57 installed...I did. And they even replaced the 10 round mag with a 13 round mag! They only charged me $100 for everything plus the $57 for the sights. To say that Glock impressed me is an understatement! I'm a customer for life and plan on adding several more to my arsenal.