The issue of heat removal from caseless-firing weapons as well as methods of igniting them continue to be researched by other companies. An alternative route was taken by the Austrian company Voere, whose Voere VEC-91 uses a caseless, electrically-fired round developed by Austrian inventor Hubert Usel. This technique makes it possible to greatly increase the ignition temperature of the ammunition while maintaining the ability to fire it. This would increase the maximum rate and duration a gun could fire at before cooking off rounds, but the VEC-91 never took advantage of this, since it was a bolt-action rifle.