Textbook "Artillery weapons" consists of three parts and contains material on in-depth study of samples of artillery weapons. The second part is devoted to the Grad multiple launch rocket system. The textbook describes the history of the creation and combat use of rocket artillery, the device of combat vehicles, the procedure for the operation and interaction of units and mechanisms, the rules for handling weapons and ammunition, the features of the operation and repair of artillery weapons and ammunition, the device and tactical and technical characteristics of the BM-21 combat vehicle, transport and loading vehicle 2T254 and standard ammunition. Possible malfunctions of mechanisms, methods of their elimination by the forces of regular calculation and with the involvement of repair units are indicated, the prospects for the development of multiple launch rocket systems are called.