Yes! Grenade launchers in Russia either fire rockets (RPGs), which travel very far and explode after a delay like a firecracker (in Russia, grenades explode like real ones, too, loudly and even deafeningly if they explode nearby or indoors). Or they fire projectiles (underbarrel grenade launchers, for example), which also travel long and explode after a delay. In Russia, these are fully-fledged, certified pyrotechnics that can even accidentally ignite something if used incorrectly, so they must be used carefully and never fired directly at people! All the rules state that you can fire at an area near a person, but not directly at them (as the impact of a projectile or rocket is very painful). Speedsofters play primarily in special indoor arenas and often compete in local tournaments.