MDS took over the old Ucktkam line. They were very rough quality with sand in the castings and were machined in high schools I have heard. When MDS too over, they seemed much better. I have a few .15s and a .40. The .40 runs well on the stand but not overly fast. Got an MVVS .21 that runs very strong, and an MVVS .15 that looks like a high performance Rossi but runs slower than an LA .15. Whenever I see a good deal on either brand, I would not hesitate to get more. I would not pay more than $50 but maybe that is just me.The MVVS often come with a nice tuned muffler.