One can make this in <15 minutes with stuff around
Take safety precautions while making and using the same as it shoots really far the ammo
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Step 1: In Action
Step 2: Materials
1. lollipop stick/tubing/ empty ball-point refill
2. paper clip
3. thin elastic rubber band
Needle nose plier to shape and cut the wire
Step 3: Getting Started
Take the paper clip, open it and make the plunger as shown
Shape a piece of wire to make the gun end
Step 4: Mechanism
Cut the plunger using the pliers
Tie the elastic band to get a smaller rubber band
Cut the lollipop tube to half, making sure it is bigger than our plunger
Make a tiny hole in the area shown on the tube
For holding the trigger make a small loop in the gun end wire by rolling it around a paper pin
Step 5: Mechanism Contd.
Pass the rubber band in the plunger end
Make a trigger by rolling the wire with a loop in the center
Tie up the gun-end wire as shown
Step 6: Trigger Mechanism
Making the trigger mechanism is a bit tricky
Use a pin to hold the trigger in position as shown below
This trigger should be able to hold the plunger when the rubber band mechanism is pulled.
Step 7: Assembly
Take a bit of wire and securely tie to make kind of magazine
this will serve to hold the rubber mechanism in place
Assemble as indicated and pull to arm the shooter
Step 8: Finishing Touches
The trigger needs to be pressed in the aperture so as to hold the plunger when armed,
when pulled it can shoot your ammo
You can also use a tiny rubber band to press the trigger in place (not shown here)
Use your imagination and design other accessories like gun sights, handles etc.