yeah, but then you get to the carefully part, check to make sure they weren't also soldered, and those types of sights were usually put on hot, so the shrink and tighten down once set.
can't had to do with the mags
google, and just keep looking, like I said they come up, there usually are some on fleebay or gunbroker or Auction Arms, just realize the real mags have SHARP clear cuts at the Taiwanese mags are bulged, that's the problem, the tab isn't punched clean, a shim or some file work helps.