I have an idea for a gun that is like a UT 2003/2004 rocket launcher crossed with a UT R.I.P.P.E.R.
It can shoot 3 razor blades at once if fully charged, and the 2nddary fire is a melee attack, which grinds things up at really close distances. If you hold both fires at once (like the rocket launcher) it will shoot a max of 3 razor blades and they'll be spinning, which rises the probablity of them rickoshaing off surfaces, and insidiously increasing therir damage.