How do you get the shishkebab in fallout new Vegas?

The vanilla shishkebab is sold by multiple vendors:

-Quatermaster Bardon at Hoover Dam

-Blake at the Crimson Caravan (at lvl 16+)

-Mick at Mick & Ralph's

-The Great Khan Armorer at The Greak Khan Armory

It can also be found on high level enemies; such as the Viper Leader.

The Shishkebab can be found in the Old World Blues & Honest Hearts DLCs on enemies

A unique Shishkebab called the Gehenna can be purchased from the Gun Runners prodived that you have the Gun Runners Arsenal DLC.

Unlike in Fallout 3, you cannot craft the Shishkebab.