Many Combi-weapon variants of the Storm Bolter exist, such as the Combi-Flamer, Combi-Melta, and Combi-Plasma; these combine a Storm Bolter with another weapon (ie. a Combi-Flamer combines a Storm Bolter with a Flamer). While the Storm Bolter carries as much ammunition as found in stand-alone Bolters, the secondary weapon on a Combi-weapon variant carries only enough ammunition for a single salvo or use.