Picture of home made nerf  or air gun , for under $12 bucks!
Well , after looking at a certain instructable , i found a very interesting one about an air release valve ( very nice video i must say) but sadly i never has 1 mm tubing nor the spring or the little rubber stoppers, but then it hit me when i was watering my plants (yes.. plants nothing more) if water had to stop then so did air! the best part is that it already has a trigger, so this is how i made the my gun

Items needed:
Hose nozzle (the blue thing on the picture)
almost 2 foot tube, use anything that would work like copper tube,schedule 40 PVC,Broom stick handle, sawed (what i use surprisingly hard and light , perfect for me! )
2 lt soda bottle never had any soda bottles around (i dont drink pop, it kills your bones!!!) so i used 500 ml water bottle, good enough but it pops around 50 psi
tape skewers
rubber water stopper for hoses
drill with a bit no larger than an inflating needle
and some hot glue or silicone, but it takes too long

Mandatory things:
Eye protection
hands that do not touch glue gun nozzle to see if its hot enough ( AKA wear gloves)
Make sure your not an idiot , if you are have some one with you thats not

Do not shoot nail at and biological living organism (translation : anything the breathes moves and eats EG: birds, humans, squirrels, ground hogs and rabbits )
Nails are extremely dangerous when fling out the barrel remember longer the barrel ( not not insane long) faster and longer it goes (thank you velocity!!! i right ,right?) , i never made a safety , once pumped it can shoot, once you press the trigger

Step 1: Take off the nozzle, not needed yet

Picture of Take off the nozzle, not needed yet
just unscrew the nozzle , you can use the multi type ones but there more expensive thus are not used, the nozzle will be used some other time if it works then ill post it (rocket launcher!) bad quality on this photo sorry, but its really doesn't matter,you get it right?
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FallenKing8 months ago
Im sorry i cant send picture for some reason
FallenKing8 months ago

FallenKing8 months ago
This is what i got. Even though it looks hard, its basic air gun like this. I just added a stock longer barrels, ect. Instead of using a thin plastic water bottle, i used a my moms lotion bottles that can hold 120 psi.
almogsade11 year ago

does the size of the bottle influencing the power of the gun?

No. Larger bottles contain more air, so you can fire more ammos without pumping. IF a 500ml bottle can handle 50psi, a 2 liter bottle will handle 200 PSI, So you can fire 4X time more.

No, PSI stands for pounds per square inch and is a measure of compression so a bigger bottle may be able to handle more air compressed to this level and maybe a higher compression due to having a thicker bottle but it probs won't be exactly linear.

On another note I'm gonna cut down the barrel, cut a slit in it and make it into a clip-fed smg/sten gun.

Simc11 year ago

can i attach a tank of paintball and will it shoot well ?

This what I done so far
13 6:43 PM.jpg
Does the inflammation needle have to be on da bottom?
pvtarun3 years ago
is ter any alternative for pump???
ViperSniper4 years ago
but if u put a needle into the bottle the air will escape right?
Cool! I'd use a pop bottle instead though... Made for much more pressure.
eric12344 years ago
i added a 2l bottle instead : )
i can't find a bottle that fits in teh nozzle :S
how far does it shoot?
bbot20007295 years ago
Wait, to fire I pull the water release nozzle and i use a bike pump to put air in through the needle before loading and firing?
billybenj5 years ago

i got a couple questions about the needle, did u just use one that pumps up balls? and did you glue the needle into the waterbottle, or is it attatched to the pump and u just push it in when you pump it?

Sharku (author)  billybenj5 years ago
yeah i glued the needle onto it but it doesnt do a good airtight fit , after like 4-10 shots it will come loose still trying to find a way of making it better (had an idea to use a bicycle tube valve) but yeah you just put the needle in the bottle glue it and pump it works for me
k thx, i got it working better now. I think must've not let the glue sit for long enough, but now its working good.
billybenj5 years ago
heres mine =p
MAVREV135 years ago
billybenj5 years ago
wow a homemade gun/nerf gun with instructions that i can accualy understand, great instructable, 5 stars, i'm gonna start making mine tomorow XD thank you for posting this.
how does it shoot?
lol read the damn thing lollllllll
you pull the thing thats supposed to let the water out
2bad4u5 years ago
I love this design... I need a cheap nerf gun for a party coming up in a few weeks and this is going to be great... I am currently working on modifying your loading so that it is easier to load a nerf bullet in (that way you don't have to mussel load)... but ill try to get some picks up once it is done...

great job!!!! :D
kee gee 2bad4u5 years ago
hi i feel yu
twenglish16 years ago
WARNING: don't over pump the bottle i will hurt!!!
Yah think
no i know from first hand experiences
it blew up on you?What psi was it or how many pumps?
i don't remember it was like almost 1000 pumps though, LOL
Where you alright and do you think that yeerk21 is a yankee
yah i was fine it just hurt like sh*t and yah i think he is, i talk in proper english and type it on the computer
if you type proper english on the computer then you shouldn't use the word with the asterisk up there in the first place. but then it really hurt so you were forced to say it. why were you forced to type it on the comp. when that event occurred long before you typed that reply there? check on scottmiller's comment up there and my reply to him. 

besides, your reply is way off topic so if you reply to me, type all the things you have to say and just send me a message on my inbox. 
some people never got over the civil war.
If you tape the bottle with duct tap, from top to bottom, and the bottle explodes, it will prevent shrapnel.
wrap ur bottle w/ duct tape so da shards wun go evrywher den it wun hurt so much:p
thats a good idea. you need to work on your english lol
iun ned 2 work on my english cuz i type lik tis on comp..wat u wan me 2 do type like this and have every you and I and other things etc...iun do tat on comp.
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