Few weapons in paintball allow you to mark multiple players without exposing yourself... except for paint-grenades! The BT M8 Paint Grenade is simple to operate, Just pull the pin while holding the cap and throw at the opponent. Upon landing, the M-8 squirts a massive amount of canary yellow RPS paint that can cover an area up to 30ft in diameter. The RPS paintball paint made infamous by Empire is safe on the environment and on people.
Paintball grenades use a standard paintball fill in a pressurized tube. It is like a water balloon that won't break until you want it to.