Set up for optics, the 512 American has a Turkish walnut stock with laser-cut checkering. The unique semi-autos action comprises of an aluminum alloy upper receiver, which secures the barrel and bolt assembly, and a fiberglass-reinforced polymer lower half that houses the trigger mechanism and the magazine well. Sharing magazines and scope rings with the CZ 455, the 512 makes the perfect complement to your bolt-action CZ rifle.