I have a handful of Mk V frames. When these are gone, Mk V production will at least temporarily cease. I can make frames, but I have no way to cut the tubing to rough size. Used to have a company that did it for me, but they went out of business and then later had another shop that cut the material and made the frames on a CNC rig. That guy died. Anyway, I will continue to produce Mk lll. And S&W lock plugs. I’ve gotten really good at making plugs. Very little hand work involved now. If anyone wants multiple plugs, shoot me a pm or email. I can make you a deal.