I recently did a trade on a glock at a gun show.It's a well worn 22 gen 2 but it's action was so smooth I had to have it. I did'nt look it over that great, gave the guy his 350 and went on my way. When I got home to my surprise it has an engraving of the state of georgia and it says "GA DNR Law Enforcement" on the slide. The barrel appears to be stainless, with the serial number 0052dnr, also matching the number on the slide. This is a great shooting gun, glad to own it. My question is why the stainless barrel?