Project Lantan: Poland Designs a Modular AK in 7x41mm
Project Lantan was a rare 1970s Polish initiative to create a modular small arms system inspired by the Stoner 63, utilizing a universal receiver and a proprietary 7x41mm cartridge. Despite heavy AK mechanics, it featured a quick-change barrel and separable receivers. The project was cancelled due to Warsaw Pact standardization on the 5.45x39mm AK-74.









