The PT-91 Twardy is a Polish main battle tank, developed as an upgrade of the T-72M1. It was designed and built by the OBRUM (Ośrodek Badawczo-Rozwojowy Urząd
The PT-91 Twardy is a Polish main battle tank, developed as an upgrade of the T-72M1. It was designed and built by the OBRUM (Ośrodek Badawczo-Rozwojowy Urząd