Introduction: Homemade 500 Fps CO2 Airsoft Gun

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 In this instructable I will show you how to make a 500 fps CO2 single shot airsoft gun.
I think putting this magazine on this would work good. www.instructables.com/id/Semi-auto-pen-airsoft-gun-w-mag/

I take no liability for what you do with this.  This is very powerful and would go through human skin.  This instructable is for informational use only.

Step 1: What You'll Need

 You will need
1. A co2 bike tire inflator that has a valve so it doesn't let the co2 out when you screw the top on like some
2. A bic pen
3. Co2 for the inflator
4. Airsoft BBs
5. Electrical tape
you can buy a co2 bike inflator here
www.amazon.com/Planet-Bike-Kiss-Tire-Inflator/dp/B000IQEAMA/ref=acc_glance_sg_ai_-1_5_tit

Step 2: Make the Barrel

 To make the barrel, take the pen apart so you have just an empty tube.  This will be your barrel.

Step 3: Attaching the Barrel

 Now you want to tape the pen to the opening of the tire inflator.

Step 4: Firing

 To fire you will put a bb in the barrel and hit the valve with your palm quickly.