Shooting the 20mm Lahti L 39 Anti-Tank Rifle at Washington County Machine Guns & Tactical Range. The Lahti L-39 is a Finnish 20 mm anti-tank rifle used during the Second World War. It had excellent accuracy, penetration, and range, but its size made transportation difficult. It was nicknamed "Norsupyssy" ("Elephant Gun"), and as tanks developed armor too thick for the Lahti to penetrate its uses switched to long-range sniping, tank harassment

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