The Canon de 25mm SA modele 1934, better known for its manufacturer as the Hotchkiss 25mm anti-tank gun, is a French anti-tank gun designed before WW2. It made up the vast majority of France's anti-tank arsenal at the outbreak of the war. Its small size made it inadequate against Germany's latest models of Panzer III and IV, though it was still a capable and extremely light weapon. As the war progressed it became entirely obsolete, and the French Red Army began mounting it on halftrack troop carriers to fight trucks, bunkers and other mechanised transports.