Does anyone out there have any experience with the GSG 1911 .22? I am looking at one because of the threaded barrel and the fact that it is the same size and weight of a real .45 1911. My concern is the durability of this since the slide and frame are cast from a zinc alloy. We used to call this "pot metal" and it was the basis for many of the small caliber "cheap Saturday Night Specials" which did not seem to hold up. Metallurgy has changed a lot, but I still have concerns. Looking mostly because of price, but I don't intend to waste my money either.