The Self-Propelled Gun is a critical mobile artillery component and regularly found in the inventories of land armies around the world.
Self-Propelled Guns (SPGs) or Self-Propelled Artillery (SPA) have gone on to see standardized adoption in many military inventories around the globe. These battlefield components are capable of ranged, sustained fire rates utilizing either conventional or special-tipped warheads (including chemical and nuclear). Today, every major land force fortifies armored divisions with a healthy collection of SPG/SPA systems, be they tracked or wheeled in nature. SPG/SPA values are factored into the land force capability component of the GFP ranking and includes Rocket-Projecting systems (both towed and self-propelled). Systems on order or currently under development (heading into the next year) are not taken into account.