The decision to build a Sports Stadium at the Weapons Factory was made in the first years of its existence. It resulted from the need to provide employees with opportunities to participate in sports, thereby increasing physical fitness and improving their health. The original plans called for a stadium with a soccer field and a cycling track, as well as a basketball court, tennis courts and a shooting range. A plot of over 4 hectares on G. Narutowicza Street was chosen as its location. The ceremonial laying of the cornerstone for the building took place on May 3, 1929. Due to extremely high investment costs, estimated at 124 thousand zloty, the stadium was built in stages. Some of the work was done by employees of the Weapons Factory as a community service. To raise the money needed for the investment, the workers and their managers voluntarily taxed themselves, donating 0.5% of their income for three months in 1929. In this way, an amount of 8,600 zlotys was collected, which was supplemented by a donation from the cultural and educational club operating at the factory. In total, the employees donated 10 thousand zlotys for this purpose, and 17 thousand zlotys were donated by the management of the Weapons Factory. With these funds, a soccer field was built in 1930. In subsequent years, a sports shooting range, three tennis courts, a basketball court, a swimming pool, a locker room with a buffet, and an administration building were constructed. Of particular importance was the construction of a cycling track, which was completed in 1934. It was one of the first such facilities in the country. It enabled not only practicing of cycling but also testing and promotion of “Łucznik” brand bicycles produced in the factory.