First homemade airsoft gun!

 by LordSnipe
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there are some other guys out here that have done basically this project, but mine has some important differences and advantages.
1. my project leaves your gun still able to fire stock nerf darts or stephans.
2. my project has greater accuracy
3. I have taken this project the extra distance, the completed project sports a 3' barrel and has a muzzle velocity of aprox 200 fps.

NOTE my project DOES require that you disassemble and modify your gun. YOUR GUN WILL STILL WORK NORMALLY IF YOU ARE USING A PISTOL OF SOME SORT. I can't promise that this project is compatible with the nerf longshot or maverick, but if you have a nightsight, this should work well.
 
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Step 1: Modding the gun

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this instructable requires that you mod your gun for greatest effectiveness. these are the steps, assuming that you have a nerf nightsight like I do.

pic1, pull all the screws out
pic2, separate the two halves
pic3, loosen the air chamber restraint screw
pic4, pull out the flow resistor, barrel assembly and assorted bits in the end of the piston.
pic5, the part you need to mod
pic5, the completed mod (break off the spike.)
pic6, optional mod of the airflow resistor for greater airflow
pic7, reassembled barrel and components
pic8, reinsertion. be sure to line up the teeth on the barrel and the barrel-piston connection.
(unphotographed) tighten up that piston restraint screw again (in pic 3) and screw the gun back together.
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SAWAirsoft says: Oct 17, 2012. 8:04 PM
Here is a link to one of our videos with a just as simple basic concept but can be taken further by series airsofters.
http://www.instructables.com/id/SAW-Armament-Tips-and-Tricks-Basic-gas-powered/
Odin2531 says: May 9, 2009. 1:20 AM
Great tutorial, one thing is how does the shell work. When I make one and put in a BB in it the shell launches it with the BB inside. I want it to only shoot BB's, not shooting nerf shells holding BB's. Please help.
bkearney in reply to Odin2531Sep 19, 2011. 7:46 PM
Hot glue it. Make sure you have it totally airtight. If you already did a PVC mod like me, it'll work WAY better.
LordSnipe (author) in reply to Odin2531Jul 15, 2009. 12:45 PM
ps, nice tux
LordSnipe (author) in reply to Odin2531May 11, 2009. 4:50 PM
try more duct tape wraping... will make the shell stick better
hossweightlifter says: Aug 26, 2011. 7:26 PM
The far right middle screw is stuck the screwhead just keeps spinning without doing anything any suggestions?
wacky_tertle says: May 12, 2011. 9:17 PM
best mod ever. I am getting BB's tomarow
wacky_tertle says: May 12, 2011. 8:21 PM
never mind, i just used my pocket knife
wacky_tertle says: May 12, 2011. 8:05 PM
I can't get the barrel off, help...
wacky_tertle says: May 11, 2011. 8:24 PM
Can U use a pen for a barrel...
I like playing w/ friends but I am too cheap to buy a real gun, and I need to actually use a gun more, cuz I suck, and great tutorial
chairston says: Apr 21, 2011. 6:31 PM
For Step 1, part (and pic) 5, I used a screwdriver with a Slotted bit ( a line instead of a Phillips, which is kind of a 4-point star shape) and put it across the little support pieces in that circle bit, pressed the piece against the floor and put my weight on the screwdriver to break those supports until the middle circle came free. The remaining junk on that circle isn't really an issue.

For optional step 6 (picture 6), I simple used a butane torch-lighter (the cigar-lighter kind, not an actual jet torch) to heat up the non-concave side of that piece of plastic until it was slightly blackish in the middle with small bubbles on the surface (and had to hold it with a small pair of metal clamps), then used my aforementioned screwdriver above to punch out a circle.

What did you do for those two steps, LordSnipe?
LordSnipe (author) in reply to chairstonApr 23, 2011. 2:59 PM
If my memory serves... I just hacked at it with my leatherman. :-)
Nice and simple solution.... I suppose there's some nut out there who'd use a milling machine for this.
spottydodz says: Feb 5, 2011. 1:20 AM
whats the range of this
commentnlookr says: Jan 4, 2011. 11:01 AM
you can order a 250 fps airsoft thats veery acurate for 199$.
this is a simple thing, for about 10$. great instructable.
Kbcorwin says: Nov 2, 2010. 6:59 PM
I modded my gun a couple yrs ago, same gun, and used the casing of a bic pen along with a sharpie highlighter casing and duct taped around them and put them in my gun, but I don't know the fps, it can leave a 2mm dent in drywall/plaster, about how powerful is that?
commentnlookr in reply to KbcorwinJan 4, 2011. 10:59 AM
you did it right.
Apple_4_life says: Apr 18, 2010. 6:52 PM
 how does the dowel increase the FPS? im confused O_o
cranberys says: Apr 10, 2010. 4:02 PM
yo im a little confused do you drill out the dowel to use as a barel or do you just drop in the air soft pellets strait in to the gun without the dowel
calliskidd says: Oct 7, 2009. 4:32 PM
hey that worked extremelly well i shot my bro (8 yrs old) and he screamed . thanks alot 
NiicKje in reply to calliskiddMar 10, 2010. 10:00 AM
hahahahah lol, ( i shot my bro, thanks alot) ? lol
llamma1010 says: Feb 28, 2010. 5:52 AM
i suggest foam backer rod so you arnt wasing expensive nerf stock darts

Olah92 says: Feb 16, 2010. 1:39 PM
Can someone please tell me exactly what kind of airsoft gun that is? Thanks :D
nutsandbolts_64 in reply to Olah92Feb 19, 2010. 2:13 AM
 which one? the colored one (it's a nerf gun) or the last pic. if it's the last pic, i don't know. for other people to be informed tell me which one
skater7832 says: Feb 6, 2010. 7:35 AM
good! i made one and it worked really well! It went at least 290fps. i checked on my chronometer and it was at 293 fps. Good instructable.
Colonel88 says: Aug 20, 2009. 8:17 AM
Not exactly homemade. Homemade is when you use PVC pipes to put together something. This is a mod, not a completely new gun. here you just put on a rubberband and a tube and taking out a piece.
cdousley in reply to Colonel88Jan 25, 2010. 2:37 PM
thats what i said

Psycho Geek says: Dec 20, 2009. 7:38 PM
i like it! its crazy like me = )
tmuterspaugh says: Dec 27, 2008. 9:32 PM
When i did this my finished product shot about 300fps because i used strong rubber bands and i stretched the spring out alot.
piedoom0 in reply to tmuterspaughOct 30, 2009. 5:51 PM
!!  More than my $40 S&W pistol!!!
(but mine looks better... hehe!)
LordSnipe (author) in reply to tmuterspaughDec 29, 2008. 5:31 PM
NICE!
Fizzxwizz in reply to LordSnipeAug 3, 2009. 1:46 AM
I agree! I'm pretty sure I've never seen an airsoft spring/air pistol shoot that fast!
Skinr in reply to FizzxwizzOct 24, 2009. 9:31 PM
I have a shotgun airsoft gun that shoots 3 pellets at once, at 360 fps each.  But that was one I bought for around $60 USD, not one I made.
piedoom0 says: Oct 30, 2009. 5:50 PM
what I did is take an air nerf pistol (like the air shot 4000, or somthing) and put a straw on it.  Thats it.  And It fired pretty darn accurate!
a_child_eating(zac) says: Oct 10, 2009. 1:24 PM
yeah it works great if u mod the spring.
a_child_eating(zac) says: Oct 10, 2009. 1:19 PM
how many fps does it shoot?
a_child_eating(zac) says: Oct 10, 2009. 10:37 AM
that wolld be good.  should i mod the spring too?
mangel004 says: Oct 8, 2009. 9:13 PM
THANKS MAN it worked great!!!!!!! at first i put too much tape but then i took some off and shot it against the wall. It hit the wall and came back at me      (i was about 10 yards away!!!).
inZaneinthemembrane says: Aug 5, 2009. 5:29 PM
what kind of nerf gun was that
firefighter1333 in reply to inZaneinthemembraneSep 24, 2009. 8:07 AM
the nite finder... the cheapest one...
firefighter1333 says: Sep 16, 2009. 8:24 AM
if u put a spring feeded mag ON TOP (in an angle so the bbs wont fall out too) then u even hav a hop-up-system! (i did that ... :D)
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