The M230 30mm chain gun is from Cobra Company. It is a nice set.
http://www.cobracompany.com/35010.htm
Don't know about the Lexmark Z23. I had a Lexmark X125 that I printed mine on. I have since upgraded to an HP Photo printer, for other reasons. As long as it prints color, it should work. Resolution is the key, if it doesn't print really fine, you won't be able to read the finer stenciling on the decals.
Good luck and post some pics once done.
Gino P. Quintiliani - Field Artillery - The KING of BATTLE!!!
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