Eventually, one of them will drop an ECHO recorder. By listening to it we find out the skags broke Carlos gun into four pieces and then ate them. Our job is to collect the gun parts.
A bandit named Carlo was mauled by skags who killed them, then devoured the pieces of his gun. On Pandora, this sort of thing happens more frequently than you might think. You will need to kill some more skags in order to find the missing parts of Carlos gun.
Item: Assault Rifle
Experience: 7430 XP
The premise in Borderlands 2 Hungry Like The Skag is simple. We just have to collect four gun parts, the stock, the barrel, the sight, and the chamber, by killing skags. The twist is that we dont know which skag ate which part; hence, we have to kill a bunch of them, at each of the four area waypoints on the map.
Tip: The skags will actually drop weapon parts all around Arid Nexus Badlands area, and they will continue to drop them until we collect the required part from each of the four types.
After we have all the required parts, Marcus offers to assemble them. Therefore, we get back to the bounty board to turn in Borderlands 2 Hungry Like The Skag and to receive our rewards.