Mos Gamos, situated on Tatooine, was an isolated community. It had a reputation as a sanctuary for outlaws.
Longo Two-Guns, the Clantaani gunslinger, used Mos Gamos as the central base of operations for both himself and his gang. In 32 BBY, the bounty hunter Jango Fett arrived in the settlement and confronted Two-Guns with the goal of collecting the bounty that Jabba the Hutt had offered for the capture of the gang, and subsequently eliminated Longo and his entire crew.