STG-77 Energy Variant

So after the creation of the STG-77 Mk 2 and the addition of picatinny rails; as well as new sights, I decided to make something with a little bit more kick. This variant of the Mk 2 is actually capable of firing intense plasma bolts from a 30 round based battery system. It doesn't use conventional ammunition; however the magazine is universal to weapons that are converted to shoot energy bolts and are 7.92x33mm Kurz in nature. It is indeed a select-fire weapon and has at least more rounds in both it's detachable box magazine and drum.