A few weeks ago, I posted in the Niggles thread about SMG grenades. Someone told me that I could give myself some by editing the Sandbox init.lua. I've tried doing a search on my hard drive, but that came up with a few hundred results.
tl:dr, I need a file path to the Sandbox init.lua.
P.S. Is that also the way to give myself extra weapons upon respawn? I'd like to spawn with the Beta Weapons as well as the standard.