The Finnish anti-material rifle Lahti L-39 att the War museum in Stockholm. Used in WWII both against tanks and later in the war when armour got to thick it became an improvised
Sold at Auction: FINNISH LAHTI L39 ANTI-TANK RIFLE - DEMILLED
d) High Condition Finnish Lahti 20 Mm Anti Tank Rifle
FINNISH ARMY 1918 - 1945: ANTITANK GUNS PART 1
Lot Detail - (D) HIGH CONDITION FINNISH LAHTI 20MM ANTI-TANK RIFLE (DESTRUCTIVE DEVICE)(CURIO AND RELIC).
Finnish 45mm Anti-tank Gun, World War Two, 28mm/20mm 1/56, 1/72 3D Resin Printed for Wargaming, Bolt Action Etc - Etsy Singapore
File:Finnish Lahti L-39 anti-tank gun in use, 2 August, 1941.jpg - Wikimedia Commons
Strelets 1/72 (20mm) WWII Finnish Anti Tank Squad (Summer Uniforms) | eBay
FINNISH ARMY 1918 - 1945: ANTITANK GUNS PART 1
Finnish 75 PSTK/40 anti-tank gun – Warlord Games US & ROW
Lahti L-39: The Anti-Tank Weapon the Finnish Nicknamed the "Elephant Gun" | War History Online
Finnish anti-tank gun 1944, Soviet - Finnish continuation war - PICRYL - Public Domain Media Search Engine Public Domain Search