The 122 mm cumulative non-rotating 3BK13 round is used as ammunition for the cannon2A31, located in the turret of the 2S1 Gvozdika self-propelled howitzer.
Source : Del-22-25 122 mm howitzer 2A31, prescription ČSĽA - Naše vojsko Praha, 1985
Source : Del-22-25 122 mm howitzer 2A31, prescription ČSĽA - Naše vojsko Praha, 1985