The Howa Machinery Type 64 is a japan-made select-fire rifle chambered in 7.62x51mm NATO, introduced in 1964. Primary use: military. Type: Rifle Action: Select-Fire Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 1964, Japan Weight: 104 oz Overall length: 43.5" Status: Discontinued Intended use: military