Century is one of the largest dealers in firearms and ammunition in the world, with most of it bought by them from various government stocks. They import most of their inventory but also have companies in the U.S. manufacture parts for them, such as semiautomatic-only frames for selective rifles that were cut up (demilled) for their other parts. They have sold probably tens of thousands of re-assembled semiauto AK clones, for example.

Many of their clones are apparently built on contract by companies that use labor of very limited skill, to keep costs down. On some gun forums, the folks that assemble many of Century's guns are known as "angry beavers."