I browsed his normal and advanced weaponry in the shop, but can't see the Weapon Mod Kits. Do the console versions even get them? I haven't come across any.

He does sometimes. It's just random luck to find them, go to the gun runners, they usually carry 6-7 mods at a time.

Yeah they're in the game. I haven't found any either, and I'm to Freeside. (and I'm playing on the PC)

Where can I find them? As in the Gun Runners?

On the Eastern Side of New Vegas, just run the rim of the walled areas and you'll run into it. It'll be fenced off and have a Protectron behind a counter outside.

Thanks mate, I sorta just killed Mick & Ralph anyway... hehe... :foodndrink:

I just counted it out, from the map on the pip boy, starting from the top left corner, it's 11 clicks right, 5 clicks down.