As the story goes, the Norinco 228 clone is actually the Dlask clone. Someone here said the small parts were made in China, so the Chinese blatantly stole the rest. As far as I know, they were all aluminum, but steel versions were made also, potentially for a CF trial. (As the story goes).
h ttp://stuff.jfettigmachines.com/228/
I believe the grooved mags are guided by tangs that prevent SIG mags from being used. I'm not sure though.
I once held one. I loved it and would have bought one except all SIGs are not really southpaw friendly.
http://w ww.dlaskarms.com/PistolParts/p228partskit.jpg
reconstruct links...