If you're into Halo 3 and you're into Legos, why not combine the two? Watch this video tutorial to learn how to build Halo 3 standard weapons with Legos (human and covenant), like the rocket launcher, beam rifle, battle rifle, and SMG.
Halo support weapons built with Legos:
*M41 SSR MAV/AW Rocket Launcher (Rocket Launcher)
*Type-50 Sniper Rifle System (Beam Rifle)
*BR55HB SR Battle Rifle (Battle Rifle)
*M7/Caseless Submachine Gun (SMG)