one of my favorite gun pictures ever, actually. Your glowey/magic gun inspired one of the key features the mythology: the fact that most wands (the ones charged with killing/hurting/maiming spells) are shaped this way because of the weapons (guns) used so much in the previous era of their history;
These are used in a D&D book called "Arsenal," printed in 2002 by Perpetrated Press. These are the actual images straight from the book and I have to ask, did you get permission from the artist to use them?
thanks