how about a MAC? for a mod most likely.
its basically acts and looks like the combination of the tip of railgun and the lancer from the Warhammer 40k mod. its like the lancer but a pulse weapon. and we can make it stronger or weaker which effects the consumption of energy. it must be charged each 15 second.
and maybe make an augmentation which makes the MAC shoot 3 shots at 1 charge / make the MAC stronger.
also if possible make an original ammo. the factory can be 3x3 in size and make it produce 1 bullet at a time.
this is just a concept and i dont need everything i mentioned above. maybe change it a bit. i will be happy if it exist.