About a year ago I had a WTB ad here looking for the sky Marshal P228 training guns. I had seen these for sale several years ago. Typically they were big Smith and Wesson 9mm and a few Sig 228s. These had the barrels heavily welded at the hood area but the frames were unaltered. I had no luck finding one, nor have I seen any lately. Some people think these are considered non-guns. I don't know. Would be careful of guns with Xed out serial numbers. Believe there was one on the big E auction for a short while. Good luck with your search. Posted this here for the benifit of others in same boat.