I have a doubt, after Marurhin (in France) was Ranger (in USA) who made them for how long in the USA, and was Interarms who distributed? The model I showed you is still very reliable, I imagine since it had all the specifications of Carl Walther's signature? I have a PPK 1966 made in Germany, my question is whether in steels, the finished or the mechanism have any difference with the one made in 1986 ?? Thks.