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my dad taught me how to make this amazing water gun today so i thought i would put it on instructables for this project you will need

an old fire extinguisher (pre 1990's)
an air compressor that can go up to 120 psi
water 

Step 1: find supplies

we went to a garage sale today and bought a perfect fire extinguisher for a $ 1.50 but im sure most people wont be that lucky so i would look at garage sales and on craigslist and other places for one it should be a large fire ext. i think mine is like a 2 gallon .
<p>These things are awesome!! My father is a fire fighter, so we used to <br>have a few of these. I used to love playing with them in the same way! I <br> now borrow them from him when I go on camping trips, in case our fire <br>starts to get out of control, or just at the end of the weekend when its time to put out.</p>
how long doe it last? <br>I could make a flame thrower out of this :3
It depends on the psi that the extinguisher is under. My usually lasted 30 seconds or so. If you do decide to use it as a flame thrower I would replace the tubing and nozzle to a metal one. (Note: I do not take any responsibility for damages or injuries with the use of the gun)
<p>So ironic. Fire extinguisher to flamethrower conversion.</p>
On Ebay I sell them seller ID Allmercy just do the advanced search by seller and put my ID in and buy one or two or ten.
I have one that is almost exactly the same as that. Including the little white plastic tube in the end. I measured the amount of water that I put in and found that when I put the labeled amount of water in the tank it met up with the bottom of the plastic tube so now I just fill to that tube every time.
awesome, i just guess every time. thank you for reading my instructable
I have an old one my dad acquired that i'm too lazy to fill and bike to the gas station... Can't wait 'till next spring, though!

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