Introduction: Pneumatic Sniper Rifle

This is a a great begginer project for someone who wants to build a pneumatic potato gun. pricing is reasonable, being around $50- $60. took me only an hour to build. The only thing that i would change is the handle, it shold be bigger to hold more air. I havnt found the range yet because I am not sure how much pressure it will take. I dont want pieces of pvc stuck in myself!


read final page for legal.

ps. sorry about photos, my camera is broken so I have to use a phone.

Step 1: Parts

WARNING: MAKE SURE ALL PARTS ARE PVC PRESSURE FITTINGS

-3 of 25mm 90degree elbow
-25MM TEE
-25MM PIPE
-15mm pipe
-2 of 25MM vavle socket
-25mm h/style/w/o valve solenoid
-20 by15mm reducing co
-tape (optional, added for strength)
-clear tube ( will jam into trigger without leaks
-air trigger
-schrader valve (car tyre valve)
- a bit of brass (u will need to thread this and drill through the middle) see pictures.
-pvc glue

Step 2: Construction

MEASURE! then cut
Glue the parts together, prime if u think necessary
making sure everything is straight becuase pvc glue dries extremely fast!
Dont forget to put in the schrader valve as well.
Now tape up the tubes, i used a roll of electrical tape.


Step 3: A Closer Look

The sprinkler valve was taken apart
-a hole was drilled in the top, on an angle
-the hole was threaded

The piece of brass was cut down
- a hole was drilled through the middle
- one end was tappered using a file
- the other end was threaded using a TAP AND DIE SET
- the brass was then screwed into the valve with plumbers tape to stop leaks.

Step 4: Wait

You may be excited to see if ur toy works. but please wait the full 24 hours for the glue to set.

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. i think u understand the waiting part

Now u can test out ur toy. slowly pressurize. Im not too sure how much these pipes will hold. I have only tried mine upto 50psi but I am sure it would go further. dont over-do it though. pvc shatters and sends bits flying everywhere.

fire what u like, potato, marshmallows, or um... stell balls. just remember though, this is now considered a weapon and is illegal to own or use. I will not be held responsible for any damage, injury or death. if u make this project, it is your own responsibility.

so what will u do now, why not modify it? change the barrel, chamber, trigger, change it to fire water balloons... the list goes on. see what u can come up with.

Comments

author
Comrade+strakovska made it!(author)2012-02-12

thanks a lot man i apretiate your creativenes

author
tigerboy made it!(author)2008-04-02

what about modified co2 cartridges??????

author
dietpoop made it!(author)2010-01-06

that would be sweet, u could use a co2 inflater, which r used 2 fully pressurise tyres in seconds, wich would be epic

author
tigerboy made it!(author)2010-01-07

true

author
airgun_expert made it!(author)2010-02-16

it would be awesome. but i recommend using steel as a material instead for co2 cartridges, depending on the size. they hold appox. 900 psi in those little tanks.

author
struckbyanarrow made it!(author)2010-04-01

you get   a check valve with a pressure valve and 125 psi regulator and your set to use it with pvc.

author
shatterfrag made it!(author)2009-10-17

do you have the smaller end of the blowgun capped so the air isnt lost? i need to know because i am building one of these for a physics project.

author
Nerfgenius made it!(author)2009-09-28

A good way to make a air tank is with a coupler, much bigger PVC, a cap that fits the PVC and super glue to hold it all together.

author
samdaman made it!(author)2009-07-24

do you need the brass piece cos i don't understand. i've never made anything like this before

author
The+Expert+Noob made it!(author)2009-03-13

some modifications i did to mine: quick disconnect with CO2 tank with a regulator set at 80psi. the trigger was tapped directly into the top and the sprinkler valve was turned 180 degrees from this one. a better stock (more volume of air) I used 1", perfect for bouncy balls. also I have a blow off on the gun itsself on the air chamber incase of any kind of CO2 bursts into the chamber (150psi) but the trigger or sprinkler valve would fail before this PSI is reached. as soon as its repaired (from a valve fail at 120 PSI, trigger blew out) I may have a picture of it up.

author
stick-69 made it!(author)2009-05-07

LOL nice, bouncy ball gun. I found that mine will shoot those small precision screwdrivers if i tape the ends for a better seal, I wouldnt recomend it though.

author
Kings+of+Leon made it!(author)2008-09-26

Does it matter that the chamber is so small? Would increasing the chamber size increase performance?

author
qballcat made it!(author)2009-02-20

yes and no, if you decrease the size of the barrel it will go much faster and farther BUT it will shoot smaller projectiles, the oppisite is true for bigger barrels

author
zach12 made it!(author)2008-07-11

and where is the schrader vavle?

author
Johnthan made it!(author)2008-11-25

I would guess the black peace with the hose coming out of it.

author
Loveofchaos made it!(author)2009-02-16

Sorry buddy, schrader valve is the valve used to full the pressure chamber with air, generally people get them from old bike inner-tubes

author
zimmemic25 made it!(author)2008-11-06

these pics are better than mine and i use a canon powershot A 60 (i think).

and if you like shooting potatoes, try tomatos! they are muuuuuuuuch more fun...

author
Giller12 made it!(author)2008-05-23

is it really illegal

author
rocksalt2342 made it!(author)2008-05-28

anything that shoots a projectile (even spitwad straws) is illegal. but who cares?

author
kicker109 made it!(author)2008-07-12

the cops do!!

author
rocksalt2342 made it!(author)2008-07-12

they carry guns! they should be arresting themselves.

author
sthealthraider made it!(author)2008-09-30

ye lol!

author
Knextructables made it!(author)2008-07-22

lol xD. You have a point. :D

author
AnarchistAsian made it!(author)2008-09-12

no, your wrong, anything that fires (or can fire) objects at a deadly rate. if they even think it can, or looks like it can or looks like a gun, the fuzz is going to take it away, and you'll get a fine...
just don't use it in public!

author
rocksalt2342 made it!(author)2008-09-12

well, I guess I forgot to add the being seen in public with a projectile launcher including a spitwad straw is liable to be confiscated add/or given a fine. it doesn't have to be deadly.

author
AnarchistAsian made it!(author)2008-09-12

huh, i didn't know that... but i doubt the cops will give you a fine for it, right?

author
rocksalt2342 made it!(author)2008-09-13

who knows? we do have the right to bear arms, but not to frighten people with them.

author
AnarchistAsian made it!(author)2008-09-15

well... if it's "deadly" you have to get a permit to make it/keep it/us it. you know how THE MAN is...

author
rocksalt2342 made it!(author)2008-09-16

still, you can't just walk down the street with a rifle even with a permit.

author
AnarchistAsian made it!(author)2008-09-16

"make it/keep it/use it" you can't get a concealed carry permit for an airgun...*i think* you can for a real gun though... but as long as you can avoid THE MAN... lol

author
rocksalt2342 made it!(author)2008-09-16

do I smell bacon? lmao

author
AnarchistAsian made it!(author)2008-09-16

... bacon?

author
rocksalt2342 made it!(author)2008-09-17

cops = pigs
pigs = bacon
bacon = cops

author
AnarchistAsian made it!(author)2008-09-18

yum...

author
sthealthraider made it!(author)2008-09-30

lol put a paralyzing dart in the barrel and shoot at nasty cops AHHAHAHAH lol and paintbalss!! PWND

author
Kaiven made it!(author)2008-09-07

Can you help me? I bought a different valve, it had a hole in the center of the diaphram. When I pumped the gun, the air pressurized, but when I pressed the trigger, the air came out the blowgun trigger instead of the barrel. So I plugged the diaphram, and now the air comes out the barrel, but the trigger doesn't stop the air from coming out. DOes your diaphram have a hole in it? Does it need to be there? I would like and answer ASAP. Thanks.

author
AnarchistAsian made it!(author)2008-09-12

don't worry!
the trigger (or pilot) valve releases air that is stopping the valve from opening, the air that comes out of it is just from the pressure of the valve opening... there are some diagrams you can look at, but it's all good, it's doing what it's supposed to. i was conufused at one pont too, so i read up online... you should too.
good luck!

author
zach12 made it!(author)2008-07-11

where can i get the trigger thing

author
Dr.+Explosion made it!(author)2008-08-23

home depot

author
bob+the+builder+%231 made it!(author)2008-08-01

I FIGURED OUT HOW SUPAH VALVES WORK! GO TO SPUD TECH LOW POWERED PNEUMATIC LAUNCHERS THEN CLICK ON THE ONE WITH TWO CHAMBERS AND SCROLL DOWN TO THE ONE WITH JOEL HOLDING THE GUN AND LOOK TO THE RIGHT OF THE PICTTURE AND YOU CAN SEE THAT SUPAH VALVES ARE JUST PISTON VALVES> SORRY

author
bob+the+builder+%231 made it!(author)2008-07-23

where do you fill it?

author
bob+the+builder+%231 made it!(author)2008-07-23

nevermind

author
anner+2k7 made it!(author)2008-02-17

hello arnold shwarchenegger

author
bob+the+builder+%231 made it!(author)2008-07-23

arnold shwarchenager came from austria not australia

author
blugyblug made it!(author)2008-04-03

SCHEDULE 40 IS A THICKNESS RATING. NOT PRESSURE RATING. IF SOMETHING SAYS CELLULORE CORE OR DWV WITH SCH. 40 ON IT IT IS NOT PRESSURE RATED, WHAT YOU HAVE TO LOOK FOR IS XXXpsi @ 73F the 73F is the temperature, and the XXXpsi is the pressure rating. In some other countries they use PN. PN means pressure number. PN1 means pressure number 1, which is 1 bar of pressure (14.5psi) If it says PN12 (Most common) It can withstand 12bar.(175psi)

author
bob+the+builder+%231 made it!(author)2008-07-23

thank you someone who understands pvc!

author
Derin made it!(author)2008-05-27

bar=stck 10 bars=10 sticks 10000000000000*000000000 bars=you get the idea...

author
kicker109 made it!(author)2008-07-12

that looks awesome!!! Could you get arrested for having it or using it? (...or fined) Also couldn't you just put the bike tire pumpy thing on one of the 25mm PVC with tap... pipe, and use a ball valve instead of that really complicated contraption (the trigger)?...

author
Kiteman made it!(author)2008-01-11

Nice Instructable (surely those biceps are photoshopped?), but can we please avoid things like "u" instead of "you" and "ur" instead of "your" or "you're"??

author
kicker109 made it!(author)2008-07-12

but its cool though

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