I'm 99% sure Vending Machines of The Wastes adds weapon vending machines to Craterside and Tenpenny. They look just computer terminals. Craterside's is on the counter beside the front door.
Just loaded the game and it is there. Using "Vending Machines of the Wastes TTW v1-1".
The Terminal on MORIA'S Countertop is the Weapon and Weapon Mod vending machine... interact with it.
There is another Terminal in the boutique in Tenpenny Tower as well. Perhaps a few others locations in the CW's but those 2 places for SURE have the ability to outright buy whatever weapon or weapon mod you want so long as you have the caps for it, (it's got a markup but that's the price of instant gratification.)
Now if only there was a armor vending machine so that I could buy the Immersive Armors :("
There is definitely a weapon vending machine at Moira's. It is a computer on her counter-and the markup is massive:)
