Airsoft grenades are some of the easiest to carry force multipliers when used properly. In this video by ARU15, this smaller team was able to take out a larger group in just one grenade throw... "Here is a very lucky grenade (pyro) throw which lands in the middle of the doorway to a building. Killing three people on the outside and what looked like five people on the inside of the building. You can see that near the end, some of the killed players try to reconsolidated the position of the grenade going off, but get persuaded off it."