First choose pipe that is about 1 and a half foot long and 1/2 inch to 1 1/2 inch in diameter.
Step 2: Putting It Together
Take your pipe and find a balloon or a elastic surgical glove (i preffer ballons). If you chose a balloon cut off the bottom of it and stretch it around one end of the pipe, then duct tape around the excess balloon on the pipe. If you are using a glove cut off a finger (middle finger is best) and do the same as balloon.
Step 3: Firing and Ammo
Ammo- To be honest ammo does not matter choose something significantly smaller the then pipes' diameter
Firing- To fir drop your bean or ammo into the pipe and let it fall to the balloon or glove then grapit in the balloon, pull, and let go.
Step 4: Playing and Safety
I always have fun playing with these things. Have friends over and shoot away.
Only do not shoot people in the face! It is dangerous and it kills to get a shot in the face.
~i will not be held accountable for any injured while playing or assembling this gun