Hatch - Very Small Round Gun Port X6.
Should you happen to find yourself with a tank that could be used in the far future by mankind, who's primary role is as a battelfield transport which happens to be named after a mythical fire breathing creature which is part Lion, Snake and Goat then these may be of interest.
As if you happen to find yourself making a 28mm scale model of such a tank but don't want a bunch of say, laser firearms, pointing out of the top these may well fit very nicely into the resulting hole and look rather splendid.
Gun Port 6mm Diameter
Also fits S-HAT07
Made of polyurethane resin