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 armour too thick to be penetrated by even this large, powerful rifle, its uses switched to long range sniping, tank harassment and with the L-39/44 fully automatic variant, an improvised anti-aircraft weapon.
The rifle is a semi-automatic, gas operated weapon with the piston located beneath the barrel and ammunition feed from detachable top-mounted magazine with bottom ejection for the spent cartridges. To reduce recoil, the rifle is equipped with a five hole muzzle brake and a padded leather recoil pad.
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