Marushin's Zero 21 -- considered by many to be the best all-around version of this WWII classic -- comes painted and nearly completed; all you need to do is fasten the wings in place with a couple of screws, and slide the propeller in. The landing gear retract just like the real plane. The canopy does not slide, but removes and can be posed open (see photo for Model 52 Zero ). Engraved panel lines throughout.