MBA Associates' rocket-propelled pistol firing self-propelled rocket rounds rather than conventional propellant cartridges. The rounds leave the barrel slowly and accelerate, making them dangerous at range but weak at close range. Type: Pistol Action: Semi-Automatic Caliber: 13mm Gyrojet Capacity: 6 Year introduced: 1965, USA Weight: 13 oz Overall length: 9" Status: Discontinued Intended use: Collecting