Notes: Though this rifle was designed by the Koucky brothers, it was manufactured by CZ. It is a compact semiautomatic rimfire rifle which can easily be stripped and serviced without tools. The stock of the rifle is similar to a smaller version of that on the ZK-420 battle rifle. It has a small aperture rear sight and a blade front sight, but is meant to be used with a scope – mounting a scope is quite easy on this rifle.

Later, the ZKW-561 was refined by CZ into the CZ-511, and sold in large numbers. The CZ-511 has a beechwood half-stock with a refined pistol grip wrist, a two-position rear sight, and a threaded muzzle for use with a silencer or suppressor.