Frozen North Armaments CM-221 Personnel mounted Railgun

a rare and almost unheard of relic weapon from the late end of the war, this rifle shaped weapon sports a extreme range digital magnifying optic scope and a range of over 4km only a handful were ever made 

weapon stats: 
SV +20/+40/+80 Rate 1-1/2-1/3 range 4.5km damage 6d12 + 24 clip 5 shots 
works with sniper
ammo: metal bearing + 1/5 power cell per shot

this is contrary to popular believe an extremely loud weapon as the projectile reaches supersonic speeds