Full Auto Airsoft Gun

Hey guys, this is my first instructable! Make sure you read the whole thing before building because i backtrack a bit. Comment on improvements or flaws and enjoy. Check out my airsoft grenade instructable at http://www.instructables.com/id/Airsoft_Grenade_5/ A Fully Automatic Gun that can shoot 6mm BB's. I actually haven't done this yet, but it should work. IF it does.... I AM NOT RESPONSIBLE FOR ANY ACCIDENTS OR INJURIES THAT MAY OCCUR WHEN USING THIS GUN, AND I STRONGLY RECOMMEND THAT YOU DO NOT MAKE THIS GUN.

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Step 1: Materials

The gun consists of a wooden frame, a 9v battery, a 9v motor, a 7mm tube that won't bend easily (I'm going to choose aluminum), a wooden trigger, wire, a small wheel, a wooden clip, electrical tape, 6mm BB's, a drill with a 7mm bit, some hinges, a spring, and some aluminum foil.

SAWAirsoft says: Oct 19, 2012. 3:25 PM

http://www.instructables.com/id/SAW-Armament-Tips-and-Tricks-Basic-gas-powered/ This is a link to a basic concept you can use to make airsoft guns in the future by making your own improvements on the concept. It will hopefully jumpstart your creative minds.

nerd12 says: Dec 8, 2011. 5:23 PM

no offense but this it not a good design. the bbs will only roll out.

cardboarddude says: Feb 24, 2011. 4:54 PM

i made an airsoft gun like this that used a 12v motor with a fan and it fired bbs only about 15 ft lol o well

cam.dav32 says: Nov 9, 2010. 12:41 PM

Great idea, how far does it shoot, and how powerful is it ?

Vick Jr says: Aug 2, 2010. 9:10 AM

I am working on an electric air soft turret and need a NON-PNEUMATIC propulsion system. (don't have an air compressor or air tank. I do have a small air pump for filling large pool toys and stuff, but I haven't been able to get it to work with a vortex block-plenty of volume, but not enough pressure) Anyway, I already have a BB feeding system working pretty well (which I'll post when the whole thing is done), and was thinking of using a tennis-ball-launcher system with two counter-rotating wheels/treads to accelerate BBs. If anyone can get a system like this working, or has an idea for another electrically powered (It plugs in to mains so there's plenty of power) system, please help. Thank you!

EnigmaMax in reply to Vick JrAug 15, 2010. 5:37 PM

the bb's will get a effect sort of like backspin, but it will likely be inaccurate. whether this is an issue, you be the judge. You can use rubber bands, they usually yield a fairly high speed. If you want semi/fully auto shots, I'm sure the knex gun guros on this site can help. As for the pneumatic issue, are paintball co2 canisters out of the question?

pufferfish9108 says: May 10, 2010. 6:04 PM

1st, airsoft is 6mm, 2nd, it would be better if u used a normal airsoft battery and system like this
http://image.ec21.com/image/teampowerbattery/oimg_GC03545534_CA03558467/Airsoft_Battery_11_1V_1200mah_20C.jpg

MrTinkerer says: Oct 22, 2008. 9:46 AM

I get what you are trying to accomplish. it is the same mechanics as baseball and tennis ball pitching machines. However for airsoft this will not work. you will run into a host of issues about feeding, jamming, and velocity. accuracy will be an issue too as the wheel will most likely impart too much spin on the BB. Why not just build a "Vortex Block" airsoft gun?

zipzapper859 in reply to MrTinkererMar 6, 2010. 4:50 PM

i am thinking about something like a vortex box airsoft gun but i don't want to use an aircompresser so i am going to try to put a motor in it. i will try it then tell you all how it goes

toogers says: Dec 21, 2008. 9:32 PM

so, it's a slug thrower, but shoots airsoft, and it's not made yet. i'm making this one soon:

thecrow117 in reply to toogersFeb 22, 2010. 3:41 PM

if your are going that way use a funnel to the barel

thecrow117 in reply to toogersFeb 10, 2010. 6:29 PM

that is a close design to my airsoft m2 flame thrower

_-WarCry-_ in reply to toogersDec 17, 2009. 7:12 PM

i made one like that. i took one of those canisters of 500 bbs with the flip out tube. i melted a hole in the bottom and glued a straw into it. then i hot glued te flip out tube on the lid to an airhose. at 90 psi it would fire all 500 in about 15 seconds at a good fps. i tried 125 psi and was goin good for about 10 mins. then a bb jammed and the whole exploded. but using pvc pipeing would make a great machine gun, altough it woulnt be very handy in a battle field, because of its bulk and relativley low air suply.

cowscankill in reply to toogersJan 2, 2009. 7:31 PM

Every time I see a gun design like that it uses a compressor instead of an air chamber. Tell me if it works though :P

stormrider711 in reply to cowscankillFeb 12, 2009. 3:50 PM

this is because they use the compressor to fill the air tank. which makes it so you don't have to keep filling the tank.

cowscankill in reply to stormrider711Feb 13, 2009. 1:15 PM

IS there anyone way I can get a battery powered portable air compressor?

Vick Jr in reply to cowscankillAug 16, 2010. 5:03 AM

Yes, you can have an on-board compressor, but I think it requires a backpack of car batteries.

Also, i calculate that to get about 300fps with 2 inch diameter wheels you'd need almost 600 revolutions per second. You could use a high speed motor or gearbox assembly, but I'm thinking TESLA TURBINE! MWA HA HA HA! (If you power it with a guarden hose, than technically that's pressurized by you're house water pump, so it's electric, and no need for air an air compressor. You can use a modified sprinkler valve controlled by a solenoid to make the trigger electric as well)

I think the biggest problem is figuring out what to use for the wheels and how to mount them. It would work in theory, but no one's ever done it because pneumatics are way easier.

imthatguy1125 in reply to cowscankillNov 1, 2009. 9:45 AM

for my bb machine gun i used a 5 foot by 2 inch tank it last about 5 seconds at 60 psi but i can rip a can to shreds and fire hundreds of bbs

stormrider711 in reply to cowscankillFeb 13, 2009. 2:38 PM

you can build one out of legos. it is about the size of your fist when its done .there are many websites that show you how to do this. all you have to do is hook one up to a lego battery pack with an on off switch on it.

cowscankill in reply to stormrider711Feb 14, 2009. 12:22 PM

lego air compressor?

flaresam in reply to cowscankillApr 2, 2009. 9:02 PM

Its funny, i just got one that hooks up 2 a car, its about 4 inches long, and i just replaced a car battery with a 9v and 2 AAs. It works great, but the batteries burn out really fast.

cowscankill in reply to flaresamApr 3, 2009. 10:25 AM

I need a better version than that lol. I was thinking maybe use an rc car battery that is rechargeable and use it wofr a gun. That might work if I can find an aircompressor 4 inches long xD

Teh_Fluff (author) in reply to toogersDec 23, 2008. 11:00 AM

pretty much, yeah lol. i have almost no intention of making it anytime soon, im lazy like that.

lupinesoul says: Aug 12, 2008. 10:21 AM

You can't expect a wheel to deliver a pellet with at same or greater force than a retail airsoft gun.

Teh_Fluff (author) in reply to lupinesoulAug 12, 2008. 1:00 PM

It matters how strong the motor is, and how light the wheel is.

zipzapper859 in reply to Teh_FluffNov 15, 2009. 6:35 PM

how light the wheel is isn't really going to matter( i mean it will matter a bit but not much) if you have a wheel that will fit in a airsoft gun, it will more enlikely be light.

CapnTac says: Aug 8, 2008. 12:35 PM

Dude, make the gun BEFORE you post. Also, I'm not liking the sound of a wooden clip.

Teh_Fluff (author) in reply to CapnTacAug 9, 2008. 8:10 AM

what's wrong with a wooden clip? (i no i should make it THEN post it, but i won't be able to make it for a while. my dad won't let me use saws without him supervising, and he's always busy.)