The T328 Timed Grenade can be used in NERF warfare as well as for airsoft use. XFoxGames takes a look at this and if you want one, you can even order this on Amazon... "We were finally able to review the T328 Timed Grenade after the 2 top pieces came broken from the factory. These are a perfect addition to our collection, these allow us to throw them and bounce them off a door and then have them go off, HOW COOL IS THAT!!!"