User blog comment:Sentry 616/Weapon Gushing/@comment-35455126-20190809024511/@comment-27144409-20190811233121

Given the requirements and limitations of railguns, they'd probably be used in a sniper or anti-materiel role. Assault rifle or LMG style railguns are a very long way off. The earliest "protable" versions would be specialized, and limited in their roles and deployment, but a viable railgun anti-materiel rifle would be very nasty to whatever it hits.