Halo Weapons Cheap! Oh, Lego Halo. Sorry. :P
Check out this page. I'm not advertising, I just want you guys to take a look at these awesome weapons.
I don't know how many of you guys like Legos, but I love 'em and I've actually made some custom weapons for minifigs but never posted them.
These weapons are actually cheap for Halo weapons and look pretty authentic when you have other figs and stuff built.