If I get a Glock 30 and get some 21 magazines to hold me over until something like a Tactical/Practical longslide comes out for the .45, will they fit, and is there a spacer I can get for my magazine to not have a big nasty gap in there?
Yes, the G21 magazines will work in the G30. As to the spacer, either Pearce or Scherer makes them for the other Glock models so them might be available for the G21 mags.
