The Various German State Arsenals Tankgewehr M1918 ATR 13mm is a germany-made bolt-action anti-tank rifle chambered in 13.2x92SR TuF, introduced in 1918. Primary use: hunting, sport. Type: Anti-Tank Rifle Action: Bolt-Action Caliber: 13.2x92SR TuF Capacity: 1 Year introduced: 1918, Germany Weight: 128 oz Overall length: 44" Status: Discontinued Military use: Yes Intended use: hunting, sport