The CZ 512 semi-auto rimfire rifle from CZ has a modular design which is easily maintained, and requires only a coin as a tool for field stripping. The action of the 512 is composed of an aluminum alloy upper receiver that secures the barrel and bolt assembly and a fiberglass-reinforced polymer lower half that houses the trigger mechanism and detachable magazine. The 512 shares magazines and scope rings with the CZ 455 making it the perfect complement to your bolt-action rifle. The 512 is equipped with dual guide rods for smooth operation and superior reliability. The barrel is the same accurate, hammer-forged barrel found on all CZs, topped with adjustable sights. An integral 11mm dovetail allows easy mounting of optics.