That Gun is a heavily modified, pared down .223 pistol, successor to the same weapon from Fallout and Fallout 2. It weighs a hefty 5 pounds and has a motorized cylinder and crane for quicker shooting and reloading than a typical revolver. The green light on the left side turns yellow while reloading then turns green and makes a ringing noise once the weapon has reloaded. Until the advent of the add-onGun Runners' Arsenal, it had the unique capability of using dedicated armor piercing rounds, something that no other pistol in the game was capable of. That Gun is also the least expensive named rare gun that is available for purchase in Fallout: New Vegas.
The weapon is located in Novac, inside the Dino Bite gift shop. It can either be purchased from Cliff Briscoe or stolen from the storage room. It is on the end of the first shelf with the rocket souvenirs to the right. The storage room key can be pick-pocketed or the Very Easy lock can be picked. The key may also be purchased during the quest Come Fly With Me or any time after its completion.
The Vault Boy icon differs from the 5.56mm pistol's icon, despite no major model change, other than the weapons finish and LED color.
That Gun is difficult to repair, as outside of the perk Jury Rigging no other weapons are in its repair list apart from the Gun Runners' Arsenal 5.56mm pistol, which can only be found at vendors. This means that the only way to repair That Gun without the add-on or perk is vendors or Weapon repair kits.
According to Joshua Sawyer, its name is derived from the fact that many players referred to the .223 pistol as "That Gun in Fallout and Fallout 2."
Like the .223 pistol, That Gun is modeled on the pistol used by Rick Deckard, the main character of the film Blade Runner. This version differs considerably in proportions, and lacks the bolt handle, ejection port, and second trigger.
PCPlaystation 3 If stolen That Gun from the storage room, Cliff Briscoe still sells it in his shop, creating the possibility to obtain a second weapon. [verified]
PCPlaystation 3Xbox 360 If loading a saved game from the main menu in which That Gun is equipped and drawn, the reload animation takes twice as long as normal. This can be solved by simply switching to another gun and then back again. [verified]
PCPlaystation 3Xbox 360 That Gun is not affected by The Professional perk. Curiously, its non-unique counterpart, the 5.56mm pistol, is. [verified]
Xbox 360 Rarely, when aiming down the sights of That Gun, when turning right or left the camera will instead pivot from the Courier's shoulders, but the gun will stay in the same spot, causing it to careen to the right and left. One's head can even be moved backwards, to the point of seeing the viewmodel hands. [verified]