The CZ 512 is an entirely different semi-auto rimfire rifle from CZ. The modular design is easily maintained, requiring 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 housed the trigger mechanism and detachable magazine. The 512 shares the same magazines and scope rings with the CZ455 making it the perfect companion 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.