Kalashnikov posted bumper sales last year after Vladimir Putin's invasion of Ukraine led to the "largest contracts" in its history, according to a news release.The arms-maker that makes the AK-47 and is officially called JSC Kalashnikov Concern boosted production last year by 40% in comparison with 2021 to hit a 20-year high.It modified the AK-12 rifle, which is used by Russian troops in Ukraine, to speed up firing and give soldiers more control over firing modes, Reuters reported.According to its website, Kalashnikov accounts for 95% of Russia's production of machine guns, sniper rifles, pistols and other handheld firearms.The company's president, Alan Lushnikov, previously told news agency TASS that almost 80% of revenues came from military sales, but it has also been selling more weapons outside Russia as well."