The P22 is a semi-automatic pistol chambered for.22 LR rimfire ammunition, manufactured by Carl Walther GmbH Sportwaffen. It was introduced in 2002. Walther recommends the use of high velocity ammunition for proper cycling. The P22 is equipped with a magazine disconnect that prevents the trigger from operating unless a magazine is actually inserted and locked into the weapon. It resembles the Walther P99 but it is somewhat smaller.