GDELS-Germany Eisenwerke Kaiserslautern (EWK), since 2002 acquired by General Dynamics European Land Systems (General Dynamics European Land Combat Systems, GDELCS, GDELS-Germany).
EWK made M2 and then developed. Like its predecessor, the M3 traverses roads on its four wheels, deploying two large aluminium pontoons for buoyancy on water.
The M3 is self-deployable by road, operating as a 4x4 wheeled vehicle with a maximum road speed of 80 km/h. It is driven into the water for amphibious operation, for which it deploys two large aluminium pontoons, unfolding them along the length of its hull. In water, the M3 is propelled and steered by 2 fully traversable pump jets at speeds of up to 14 km/h.