A new type of an airsoft pyro grenade called "Caliber" is announced by the Russian StrikeArt company. According to Red Army Airsoft, this is launched using your airsoft gun's muzzle. When you stick the "Caliber" to the muzzle, it is activated when the BB round strikes the initiator, the charge will then launch the shot that can fly up to 50 metres. No need for a launcher to use this.