Russia has developed two new versions of its the 2S19 self-propelled artillery system. The 2S19M uses the same 152mm/47-caliber barrel as the original 2S19. The primary change is a new ballistic computer. Both versions of the 152mm weapon can achieve a range of 29 kilometers firing base-bleed ammunition. The 2S19M1 uses a 155mm/52-caliber barrel and fires Western ammunition (or Russian copies of it). It can achieve 30 kilometers with standard ammunition and 41km with base-bleed shells. This version is intended for export and has been offered to India.--Stephen V Cole