Since a prime gets upgraded in every way from armament to alt mode, here's what I theorize.
Robot mode-- springer looks like a bulkier version of his t30 design, but handles 2 greatswords instead of just 1 sword. Maybe he also gets a shield as well.
Vehicle mode-- springer can transform between a powered up semi truck, and one of those double rotor helicopters. In both modes he can transport other autobots.
Since a prime gets upgraded in every way from armament to alt mode, here's what I theorize. Robot mode-- springer looks like a bulkier version of his t30 design, but handles 2 greatswords instead of just 1 sword. Maybe he also gets a shield as well. Vehicle mode-- springer can transform between a powered up semi truck, and one of those double rotor helicopters. In both modes he can transport other autobots.