The EPM3 is a heavy directed energy weapon built by Atlas Corporation. The EPM3 is a semi-automatic rifle that uses a miniature fusion reactor to generate and fire hardened bolts of condensed energy at range; under prolonged fire, the reactor overheats and automatically retracts to vent, before being pushed back in and regulated. Not having a traditional trigger, the EPM3 has a side-mounted pistol grip that allows the weapon to be carried and fired. The EPM3 is used by the Alliance of Nations