Kbk wz. 2005 Jantar

The 5.56 mm '''Kbk wz. 2005 Jantar''' is a Polish experimental assault rifle. It is configured in a bullpup layout, and was designed by the state-owned Wojskowa Akademia Techniczna, based on the Kbk wz. 1988 Tantal rifle chambered to 5.56x45mm NATO.

The "Jantar" is a prototype to test the advantages of the bullpup configuration, which proved to be a more accurate layout for burst-shooting of carbines ("karabinek"). The project was not intended for production, but to gain experience to be applied in the modernisation program of the Polish military.