A couple of weeks ago I pick up a 5906TSW it was obviously a agency turn in, the right side of the grip was badly seat belt battered.The gun it self was shockingly hardly used. I took the gun apart cleaned all the holster and donut dust from the inside. Surprisingly very little powder residue . So I guess even the blind sow gets a acorn ever now and then. I put a 18lb main spring in it and a new grip I had and went to the range with 200 rds, it ran flawlessly. The DA pull on this gun is as smooth as my N frame 27 and the SA is almost as good. I have 6 other Smith autos, this one by far has the best build quality , care and attention to detail. I could almost kick myself for not getting a 2nd and letting a 4006TSW pass by last year . I had always thought that these where nothing but a 5906 with a rail and a billboard ,was I wrong. Anyone else have experience with these?