I have made three custom weapons in the past few days. I was only going to make one, but lego is addictive. Here a quick pic: http://i208.photobucket.com/albums/bb318/Aero_Games/HPIM2650.jpg
From left to right: Halo silenced sub machine gun, Halo battle rifle, My original Gun; the M-SABR (multi-setting adaptable beam rifle)
A brief description of my gun: Standard issue equipment. Has four main settings, high, medium, low, and automatic. It also can adjust the power of the laser beam from stun to...well...total destruction. Very adaptable (hence the name). Also called "M-saber" or just "saber"
This poll will run for a week.
edit: FYI: I already made a (rather crude) resin copy of the M-SABR. So there is the added benefit that I went a little extra.