Grenades launcher for the 5DR mecha resin model kit
The 5DR mecha is essentially a rescue unit. One of the tools installed is a foam grenade launcher. In the event of a fire, grenades are shoot with precision. After a delay of less than 10 seconds, the grenade's combustion process starts to produce a fire suppressing aerosol mist. Remember that they work best in enclosed spaces!
Real pictures of the Rescue Labor (5DR) work-in-progress: mecha's leg.