The ZfK 55 was a Swiss sniper rifle based on a modified K31 action, fitted with a 3.5x scope in a distinctive side mount. It served the Swiss Army until replaced by the SIG SSG 3000. Among the last bolt-action sniper rifles adopted by a Western military. Type: Rifle Action: Bolt-Action Caliber: 7.5x55mm Swiss Capacity: 6 Year introduced: 1955, Switzerland Weight: 115 oz Overall length: 44.1" Status: Discontinued Military use: Yes Intended use: Military, Sniper, Collecting