How to Find That Gun, the rare weapon 5.56mm high value pistol in Fallout New Vegas
The 5.56mm high value pistol isn't the most powerful gun in Fallout New Vegas, but That Gun, the rare weapon version of it, is quite a bit more powerful. Watch this video to learn how to find and acquire That Gun.
From the Creator:
It's located in Novac, inside the Dino Bite Gift Shop. It can be purchased from Cliff Briscoe for around 1500 caps. With a barter skill of 20 'That Gun' can be purchased for '1337' caps or, if you prefer, stolen from the storage room.
Not the Best idea to kill the shopkeeper; He is a valuable source of information. Do not sell the rocket souvenirs they are quest related.