The Railgun is a surprisingly solid weapon.
I got the BSK-Void Killer from the event specifically for the Railgun. Despite being excited to use it I also kinda expected it to be perhaps a little gimmicky or at least not the terror you'd imagine. But when I temper my excitement and stick to the back line this thing is nasty. I can harass at range with my lasers and then when someone with especially a damaged CT pops out I can send em to hell. Plus it's really fun to just pop some poor flanker and chargimg brawler in the chest and ruin their big moment. Though I feel terrible whenever I nanage to clip someone in the back as they're ckearly starting to feel safe.