this is the instructions to build a cheap airsoft tripmine. to build this you will need
1 3/4" diameter pvc pipe approximately 2.75" long.
1 metal spring approximately 2.65" long
1 endcap for pipe
6-8 airsoft bb's
metal or wooden dowel approximately 4mm in diameter
Step 1: Step One
drill two holes in the pvc pipe about one inch from one end.
Step 2: Step Two
put the end cap on the opposite end that you drilled the holes in.
Step 3: Step Three
put the spring in the pvc pipe.
Step 4: Step 4
place one penny on top of the spring
Step 5: Loading
put 6-8 airsoft bb's on top of the penny.
Step 6: Finnishing
put antother penny on top of the bb's the push those down until you can see through both the holes, then put the dowel through both holes.