Can't really weigh in on the first two, but the third: The AS50 can do 174205 damage in a shot. They may have found the gun legitimately, they may have hacked, but the gun can do that much damage when it is loaded with it's native ammunition as opposed to the m107 rounds. It's an anti-material rifle primarily used for killing vehicles, but players die from it no matter where they are hit and it is a favourite for hackers.