The Karabinek wz.29 (Kbk wz.29; Polish: carbine model 29) was a Polish bolt-action short rifle based on the German Kar98AZ. Identifying attributes include a 98/05 style mast bayonet lug ending directly beneath the front sight and winged protective ears to either side of the front sight blade. Cavalry models featured a turned-down bolt handle, and early versions had a stacking hook near the end of the stock on the right side.
After regaining independence in 1918, the Polish Army was armed with weapons left over from the nations that occupied Poland during the Partition Era, including Russian M91 Mosin–Nagants, Austrian Steyr-Mannlichers, and German Gewehr 98s. French Berthiers and Lebels from the soldiers of the Blue Army were also on hand, as well as the Japanese Arisaka and guns from Great Britain such as the Lee–Enfield.
As a result, at the end of Polish-Soviet War in 1921, the Polish army was armed with approximately 24 types of guns and 22 rifles firing different ammunition. In an effort to reduce logistical difficulties, the Polish Army sought to adopt a single type of rifle. Conveniently, the Treaty of Versailles, having established the Free City of Danzig, gave the Polish Army access to the weapons-making facilities at the Danzig Arsenal, facilitating the choice of the Mauser 98 action as the basis for any new Polish military rifle. The Mauser was also arguably one of the best bolt-action rifles at the time and the best available to Poland. Production of the wz.98 began in July 1922, after the Danzig machinery was moved to Warsaw and creating the National Rifle Factory in Radom.
Two years later, production of the wz.98 rifles was stopped. The military sought to adopt an intermediate-length rifle, such as the Lee–Enfield, M1903 Springfield, or the German Karabiner 98a based on analyses of combat experience in World War I and the Polish-Soviet War.
Field use of the K98a rifles showed that the design was not fit for use as an infantry weapon (originally, the K98a had been developed as a weapon for auxiliary or special troops).