Aemilianus

My University uses a Strongarm as a general guide for how strong a blaster can be without starting to be dangerous. My Vulcan with a 6kg spring and AR removal is borderline legal. Essentially it's a pain test - our game Mods and our Community Welfare Officer get shot on skin and light clothing and make a judgement on a case by case ruling. Stefans are illegal, for obvious reasons.
We follow the UK laws, in that a blaster must be at least 50% bright colours - an uninitiated person must be able to look at the blaster and think "Yep, that's a toy." Blasters must also be stowed in bags when not on campus as well, because some people don't realise they're toys. I for one, was accused of carrying around a real gun in the shape of a Pyragon once, so better safe than sorry.