After identifying the loss of a priceless artifact at the Vikki and Vance Casino, the Courier can track down the infamous desperados that nobody has heard of to the northern edges of the wasteland...
Sammy and Pauline Wins are found in their hideout north of Westside. Talking to them will reveal that they are responsible for stealing the SMG (and quite proud of it). Though declaring themselves master criminals, they are anything but and the mere act of conversing with the player puts them on edge...
Pauline will reveal that their plan consists of going into a Strip casino and holding it up with the submachine gun. Any rational attempts at dissuading them from this suicide attempt will fail, until the player sarcastically praises the plan with Speech 55. Pauline will realize the foolishness of the plan, recall the nightmares and quickly tell the player to take the SMG away from them by talking to Sammy. Sammy will also drop the facade and thank the player for bringing them to their sense. He will give out the combination (5-23-34) and ask the player to retrieve Vance's 9mm submachine gun.
Of course, the player can also kill them both afterwards to gain the unique hats they have.
The gun can be used as an unique weapon or returned to Primm Slim for 1 500 caps and leveled experience.
Behind the scenes
The code to the safe Sammy Wins gives you, 05-23-34, is a reference to the date the real Bonnie and Clyde were shot in Louisiana.