... Especially when it gets close to Halloween this year. With Halo 3 on the way and the marketing machine powering up, they'd be really popular.
You'd probably have to license it from Bungie though, wouldn't you? Either that, or have some sort of eBay auction for them. Heck, I'd bid on the sniper rifle (my favorite weapon in the game) for myself!
I'm sure you've probably already seen that Bungie is "profiling" each of their weapons, right?
http://www.bungie.net/News/TopStory.aspx?link=ma5carrrrr
That would make some neat info to include with each gun.
Dan