 After the development phase, the rifle received the military designation 'Bor'.After 1999, when Poland became a member of the North Atlantic Treaty Organization, there was a need for new firearms for the Polish Armed Forces compatible with NATO standards.Starting in the early 2000s, at the Mechanical Equipment Research and Developing Centre ("Ośrodek Badawczo Rozwojowy Sprzętu Mechanicznego" – OBR SM) in Tarnów, engineer Aleksander Leżucha started his work on a new standard sniper rifle.