502,

In the states we have these little firecracker things called "Snaps." The are tiny little pouches of powder that "snap" when you throw them on the ground. I think if you ran them in a series and some how applied electrical current it would be perfect for MG bullets hitting the ground.

Can't wait to see your next movie. You are inspring me. I am going to get a digital camcorder this summer and try it myself.