Awesome stuff, without derailing this thread, are there any pictures of lasered markers?
I like that design you're looking at, but personally reckon it's a bit too chunky and not swirly enough
If I had some photo shop skills to show what I mean I'd probably go for something like
http://www.pink-fusion.co.uk/acatalog/ring-oxi-swirly-band-large.jpg esque swirls around the barell, joined from the tip of the barrel to the hopper or rammer by
http://tattoo.about.com/library/graphics/kevinryanback.jpg type inter-locking designs but with sharp-ish ends