This is a schematic weapon with 40 damage plus 10 fire damage over five seconds. The Shishkebab is built from a motorcycle gas tank, motorcycle handbrake, lawnmower blade, and pilot light. One of its schematics is found with Vance, who gives it to you after the "Blood Ties" quest. Lucky Harith, the wandering merchant, has another. The final set is near a workbench in a Red Brotherhood Outcast shack, to the southwest of SatCom Array NN-03d. The shack does not appear on the map, but is at the base of the hill the array is built on. Every schematic you obtain increases the condition of the weapon when it is built.