It's a simple nerf that you can do with your bicycle pump and slingshot in 20 minutes at home.
Step 1: Necessary Materials
-A Bike Pomp (Ebay)
-62 Celcius melting polymorph plastic material (Ebay amazon)
-Pipe (Nerf Bullet size)
Step 2: All Steps
First drill the end of the bicycle pump with a drill.
Then melt the polymorph in a container.
Insert the tip of the tube pump ..
Keep the slings at the center of the bicycle pump.
Secure the pump end to the slingshot. It's all good fun.
Important: It gives a very strong shot. Play the children with surveillance. Protect your eyes from the shot.