Micheal, Mike, thanks.

Burrman, "even the temperature where the plastic gun is located will change those measurments" Ha! how true. Sadly, I was thinking of doing the interior to scale as well But I don't think my son would be too happy with me dissembling his toy. "I ALWAYS get too carried away and make it painful!" I think I might fixate a bit too much :)

Cheers

Val