The megarocketlauncher.zip file you have requested: Garry's Mod / SWEPs / Garry's Mod: Mega Full Auto Rocket Launcher - 3.43mb is not available. Perhaps try browsing all files for the game Half-Life 2 and upload any files you want to share or are missing. This is the only information we could locate:
This is a cool admin SWEP for gmod. It's a rocket launcher that is fully automatic, and shoots faster than, say, an SMG from half-life 2. Enjoy.