Picture of High Powered PVC Air Gun

In this tutorial I'll show you how to make a high powered air gun with PVC and miscellaneous parts that you can find around your house or at your local hardware store. This gun has a low volume high pressure air tank and a short barrel to maximize the projectile's velocity. It is equipped with a modified sprinkler valve to release the pressurized air instantly. The air gun can shoot potatoes or anything that can can fit into it's 1/2' barrel.

Watch The Video:

Notice: Please be safe when following this Instructable. I am not responsible for any injury or damages you cause as a result of building or using this air gun. Use gun safety; do not over-pressurize the air tank and never aim or fire projectiles at anyone or anything other than the desired target.

Step 1: What You Will Need:

Picture of What You Will Need:

Parts/ Materials:

  1. 1/2'' PVC Pipe(1'-5" Section)
  2. 1''-1/2'' PVC Bushing(SLxSL)
  3. 1'' PVC Pipe(1-3/4" Section)
  4. (2x) 1'' PVC Male Adapter(SLxTH)
  5. 2"-1" PVC Bushing(SLxSL)
  6. 2" PVC Pipe(2-1/4" Section)
  7. 2" PVC Coupling Slip
  8. 2" PVC Male Adapter(SLxTH)
  9. 2" PVC Threaded End Cap
  10. 1/4" Threaded Brass Coupling
  11. Threaded Shrader Valve
  12. Sprinkler Valve
  13. Pneumatic Trigger

Tools/ Adhesives:

  • Saw/ Pipe Cutter
  • Drill
  • 3/8" Drill Bit
  • 1/2" Drill Bit
  • Phillips Screwdriver
  • Adjustable Wrench
  • PVC Primer
  • PVC Cement
  • Epoxy
  • Painters Masking Tape
  • Spray Paint(Optional)
  • Air Compressor
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connorr223 days ago

I am about to make it this is an awsome science fair idea thanks!

(I am giving you credit for the idea and instructuins in my paper)

connorr21 month ago

Bro this thing is freaking ammazing !!!!!!


KyleTheCreator (author)  connorr21 month ago


KyleTheCreator (author) 5 months ago
I haven't really measured how much volume is in the tank but I use the psi gauge on my blow gun to check the pressure of the tank... I normally fill it to around 80 psi. If you
Make a air gun post a pic of it here in a comment. I would enjoy seeing it:D
covertopps5 months ago

how much air dose it hold an how do u know its filled

tcharris20175 months ago

Hmm.. wondering how you would mod it to shoot water balloons.

KyleTheCreator (author) 6 months ago
I got it from winning a instructables contest.
tweet22976 months ago
Dude where did you that shirt!
IamGutter7 months ago

Nice design but I think I would load it before charging it in case you hit the trigger while loading.

KyleTheCreator (author) 7 months ago
Willie Kruger7 months ago

Very cool build. Looks good and is fairly portable. Great work!

KyleTheCreator (author) 7 months ago
In the video I shot it at 80 psi. The heavy gauge PVC parts have a 250 psi max pressure rating... Personally, I wouldn't go too much over 100 psi.
dudleyjohn7 months ago

How much pressure is too much?

Goatar7 months ago
If anyone watched myth busters last wk, they showed a longer barrel will produce more speed.
KyleTheCreator (author) 7 months ago
Thanks for the feedback!
KyleTheCreator (author) 8 months ago

nice air gun

KyleTheCreator (author) 8 months ago
That's a good question... I would give a rough estimate of around $35 for the parts and materials, plus the cost of the adhesives and paint, but it could be pretty cheap if you had some of the supplies already.
Randumb838 months ago
Hey, I was wondering around how much did this cost.
put a cap at the end of the barrel and drill a hole. It the barrel then add a straight brake line big enough for the bbs.
KyleTheCreator (author) 8 months ago
You probably could if you used the right adapters, but I personally wouldn't recommend this because there might be too much pressure for such a small barrel diameter.
Do you think you could modify your design for plastic BBs?