87-mm light field gun M1877 (Russian: 87-мм полевая лёгкая пушка образца 1877 года) was a field gun utilized in Russo-Japanese War, World War I, Russian Civil War and a number of interwar period armed conflicts with participants from the former Russian Empire. The gun was initially developed by Krupp, but was also produced in the Russian Empire. Russian-manufactured pieces differed from the German-manufactured ones in breech type and construction elevation mechanism. The gun lacked recoil mechanism.