I made these for K2, they were to be used to simulate tactical airstrikes. Specific targets that had strategic signifigance had the receiver/demo sims placed inside or attached directly to either the structure or "other" targets which could be anything from vehicles to Air defence radar installations. Once certain objectives had been acomplished such as suppresion of the oppostions air defence, which ever team controlled the expediant airstrips woud be issued ICS AN/PEQ LAM battery packs that attached directly to the weapons RIS system. The pack housed electronics that allowed the player using the weapon to "Illuminate" the target with the AN/PEQ once he got a decent beam on the Target, a receiver would detonate the blast simulator which would simulate a direct hit with laser guided munitions.
www.wolfpackairsoft.com/~ct/anpeq.mpg
The powder dipersal is fairly small, I didn't place much into the device as I didnt want to have it get all over the area. The blast simulator has the capacity to hold as much as ten pounds of powder if necessary.