The Kbs wz.1996 Beryl (beryllium) assault rifle was designed in Poland to replace the AK-47 (7.62 x 39 mm) and wz.88 Tantal (5.45 and 39 mm) rifles in service with the Polish Army. It is a further development of the Tantal. First prototypes of this assault rifle were produced in 1995. The Beryl was accepted to service in 1997 as the standard issue infantry rifle and production commenced the same year. This assault rifle is also available for export customers.