The Gunarm is an auxiliary weapon attachment made for RoboCop. The weapon's primary SMG is a Calico Submachine Gun; the others are a custom made rocket and flamethrower.
RoboCop 3[]
In RoboCop 3; Murphy utilized this as well as his Auto 9 throughout the whole movie. He utilized it at the end as well during the battle between the Detroit Police Department and OCP Rehab Troops and SplatterPunks.