 The original Promaster was a mechanical blowback paintball marker manufactured by a company called Line SI, which was then partially owned by Jerry Dobbins, the now-current owner of Indian Creek Designs.It was one of the first stacked-tube semiautomatic designs in paintball in the late '80s to early '90s.When ICD set out to redesign the Bushmaster (itself named after Line SI's famous pump) in 2005, the ProMaster name was resurrected to help promote the new model.