Prototype Airsoft Trip Mine.

The airsoft land mine I bought was a pitiful waste of $50. The self proclaimed "loud boom followed by a large blast of powder" was a tiny pop and half inch high puff. Enemies didn't even notice that they triggered it. This is the prototype version of my trip mine. It throws BBs about twenty-eight feet and baking soda about five. It is spring powered and acts like a piston; the spring is attached (by a washer and screw) to a plug. To operate, place the spring mechanism inside the pipe. Push it down with a plunger and lock the plug in place with the pin. As soon as I finish the final version I will post an Instructable.
https://www.instructables.com/id/Build-an-Airsoft-Trip-Mine/