The Noron Group put out a 'Weapons Manual' a long time ago. It has inaccurate 'blueprints' for several SF movies/shows. There is a full page 'diagram' of the 'Colonial Laser Pistol' which features the weapon left side, top, right side, and back. It would probably work fine for what you have in mind. I haven't got a scanner, but it's a popular book, ask around.
Jay
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