Congrats on the new wheelie.You got a great deal. I have a 637. Cost me about $450. Is the 638 an Airweight? I assume its the same as the 637 with the shrouded hammer. I love my 637. I find Im carrying it more than any gun I own. I carry OWB in a Blackhawk Serpa. IWB in a Comp-Tac C-Tac. I also have a Uncle Mikes belt pouch for it. It holds the pistol and two speed strips perfect. Its great for days when I cant carry on my person. You dont need snap caps. I dry fire mine all the time. Im looking for a Crimson Trace for mine also. Who has the best price for CT.