Homemade Airsoft Grenade Launcher Powered By Co2

Picture of Homemade Airsoft Grenade Launcher Powered By Co2
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This is a homemade grenade launcher for your airsoft guns. It has an inner high pressure chamber. This launcher uses 12g Co2 cartidges to pressurize the chamber. You can either glue the shell down or make an interchangeable system. ALWAYS refer yourself to the images. A picture is worth a thousand words!!! ;)

Video demonstration
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Step 1: Materials

Picture of Materials
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For this instructables you will need the following materials:
-2 piece of 1.5 inch abs pipe (1 feet long each)
-2 1.5" coupler
-2 1/2" metal ball valve
-2 1/2" nipple
-2 3/4" to 1/2 reducer
-1 3/4" nipple 2 1/2" long
-Teflon tape
-Thumb tac
-Abs cement
-1 Dollarama spring party popper
-2 electrical wire cap
-1 toillet or sink pipe (refer to picture) 20" long
-Co2 cartridge
-Electrical tape

Tools needed:
-Hot glue gun
-Dremel with sanding disk

First, you will need to assemble the pieces like so.

Step 2: Grenade launcher shell

Picture of Grenade launcher shell
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Disassemble the dollarama party popper and keep only the tube. You need to remove the bumps and line inside the tube. Mesure 8 lenght of toillet or sink pipe, cut them then glue them with the hot glue gun. Glue an electrical cap in the center at each end. Make a little lip so that the bbs don't fall in the launcher on one side of the shell.

Step 3: Plumbing

Picture of Plumbing
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You need to assemble the plumbing parts in this configuration. ADD A LOT OF TEFLON! In the bottm of the 3/4" cap, glue the thumb tac with the hot glue gun. BE SURE IT IS CENTERED.

Step 4: Moding the ball valve handles

Picture of Moding the ball valve handles
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Take the wrench and remove the handles on the bal valves. Then unfold the legs on the handles and screw them back in.DO BOTH.
Big Baneser8 months ago

Whats the FPS or minimum range and what bb's did you use

-CCCP-1 year ago

Masher0071 year ago

This is not spam, but a warning. PVC will fail suddenly after a while. This was band member that hurt badly by a T-Shirt launcher explosion.


where do you get a dollarama party popper?
more like a master key (shotgun under barrel attachment)
costs about $17.76 from tractor supply
bengrvr4 years ago
what is the average cost
stg.badass5 years ago
ol all my teamates were look at me like what the heck are you doing
How much does the shell weigh? Im trying to build something similar but idk how much a 16g Co2 cartridge can shoot.
zimmemic256 years ago
about the co2 cartridge: where to get it? is it used for paintball guns? or maybe for a soda machine?
those ones, sometimes are used for paintball guns, but they are more commonly used for bb guns and air rifles. they are also relatively common for CO2 powered airsoft guns. you should be able to find them either online, or the sporting goods section of your local department store, by the airsoft and paintball guns.
my local deparrtment store doesnt have airsoft, i have to go to a weapon store (they sell real weapons, paintball and airsoft). i now use a 300grams CO2 soda-machine-cartridge. ill post an instructable soon
why do soda machines need a co2 cartridge?
sgtmik (author)  Father Christmas6 years ago
....sigh....WALMART and if you're canadian....CANDATIAN TIRE
What about attaching it to the gun? you would need a rail grip. Where can I find a how to on the rail grip?
buy a rail, glue it on, done
or a screw tube (metal band which is tightened around the fixture using a screw
marffy5 years ago
 how do those ball valves hold up to the pressure of the co2? where did you get them?
maxa6 years ago
how many shots well you get out of one co2 can
evanwehrer6 years ago
How much would this cost?
those would be ausome
sgtmik (author)  evanwehrer6 years ago
kinda big. youre forgeting the whole purpose of the gun. AS SMAL AS POSSILBE
i don't see why not
timntek6 years ago
Is the shell thing like an airsoft shower
sgtmik (author)  timntek6 years ago
what pressure is a normal co2 cartrige at
looks cool im gonna try it =]<br/>a vid would be great <br/>
munkeeboy6 years ago
I take the risk of sounding stupid, but could you explain how the grenades themselves work a little more?
temp munkeeboy6 years ago
the co2 cartridge is used to shoot all the airsofts out of the party popper. It's essentialy a small pneumatic potato cannon.
what about attachment? is there a rail attachment to these steps?
Pumpkin$6 years ago
wow with just a 12. gram
hippojoe6 years ago
How many shots can you get from one CO2 cartridge?
sgtmik (author)  hippojoe6 years ago
about 5 to 7
hippojoe sgtmik6 years ago
Wow thats more thani thought it would. Great job!!!
abadfart6 years ago
thanks i'v been looking 4 something like this
engineer_017 years ago
how many times do u have to pump to pressurize it?
sgtmik (author)  engineer_017 years ago
u dont have to pump it. IT USES CO2. just open the back valve and colse it. this will pressurize the chamber. ;-)
nice, i hate those overpriced commercial ones.