Hey guys! It's Mike from The Geek Pub! And today, I'm gonna show you how to make a
CO2 canister gun. Only this gun fires the canisters!
So I've got this little Umarex CP ninety-nine pistol.
It looks like a Walther twenty-two but it's really just a CO2 BB
pistol.
I spend a lot of time shooting it at tin cans in my back yard and its a lot of fun,
but I end up with a lot of these.
And that got me thinking "Could I shoot these?"
Be sure to checkout TheGeekPub.com for the parts list for this project.
As with the water balloon cannon, I again used my miter saw to cut the PVC,
using a segmented blade for safety reasons.
However for the smaller diameter pipe I used to PVC pipe cutter.
If you want to see more details on the construction check out my water balloon
cannon video as the design is very similar.
Again in this project I used a water sprinkler valve for the firing
mechanism.
And once you cut all of the pipe and test fit it, this is what it should look like.
In future videos I'll show you how to replace the barrel to shoot other
projectiles.
Now that we're happy with the fit, it's time to disassemble it and make it all
permanent.
Be sure to use the correct PVC primer and glue for pressurized pipes.
Since this rifle has a trigger rather than a detonator
we'll need to take a one and a quarter-inch cap
and drill it out on the drill press to look like this.
Then drill two holes in it to accept the momentary switch.
And now I want this rifle look awesome so it's time for slick paint job.
And since I am doing two colors (green and black), I'll have to paint the green first,
tape it off and then paint the black.
Feel free to go crazy with your paint job,
just be sure to let it dry twenty-four hours between coats.
And once the final caot is dry, carefully remove the masking tape from all of the parts.
Now to go ahead and add PVC pipe tape
to all of the components.
Since we don't have a detonator I made this little cover to hide the battery and cables.
Speaking of cables it's now time to cut and strip our wire.
We'll need to attach the momentary switch to a twenty inch section of doorbell wire.
Now, solder the other end of the nine volt battery snaps and sprinkler valve.
Then thread the doorbell wire through the hole on the bottom of the cap and
pull it all the way through.
We can then install the momentary switch into the top of the cap
and screw it on tightly with the provided knurled nut.
To attach the battery housing and trigger housing I used hot glue.
Just hold it in place for about thirty seconds while the glue dries.
Now just insert the battery and close the cap.
Also I decided to cover the doorbell wire with this plastic flex tube to clean up
the look.
To test it for leaks before firing attach it to an air compressor a close
the valve.
And that's it, our rifle is now complete!
But we need some ammo!
Take an empty CO2 cartridge wrap it one time with a peace of duct tape.
This will ensure tight seal between our cartridge and the inside of the rifle barrel.
Before firing add some vegetable oil to the barrel and slip in a CO2
cartridge.
Now guys, use extreme caution and fire your first shot.
I was easily able to blow a two inch wide hole in this piece of OSB decking.
You can see on my second shot with the camera a little closer.
This thing is made for carnage and easily left a hole the size of my hand.
And remember those
soda cans I like to shoot?
Yeah they're no match for this thing either as I blew them halfway across my
yard!
tTke a look at the difference between this can I shot with BBs abd this can I shot
with the cartridge rifle.
There's literally no comparison!
I even invited David from Awesome Airguns over to take a shot!
Well guys, I'm not kidding when I say to be careful with this project. Adult
supervision is required and you assume all risks!
Thanks for watching and if you enjoyed this project, please like and subscribe to my
channel on YouTube!