Introduction: How to Make a Sniper/Shotgun Airsoft Rifle

The above video demonstrates a simple and inexpensive airgun design that can be used with airsoft pellets or a wide variety of other projectiles.

6mm ID Brake Line (Test with airsoft pellet to check size)
1" x 4" PVC Pipe Nipple
1" Threaded End Caps (x2)
1/2" x 1 1/4" Spring (Approximate size)
Washer & Nut to fit the attached Brake Line Fittings
Brass Air Tank Valve (Schrader Valve)
Compact Bicycle Pump


chizmuffin (author)2014-03-25

I made it, and it's AWESOME. I just have one problem: I need a solution for the pellets spilling out when i hold it downwards. I also am wondering if there is an easier and faster way to load the bullets, and if a larger pvc will make it have a higher fps.

Flameofglory (author)chizmuffin2014-04-17

I have a suggestion. First, for the pellet to not fall out of the barrel find where the bullet should rest and cut out a section on the barrel. Many airsoft guns have what in called the "hop up unit," this unit holds the pellet until fired out of the barrel so you can take the hop up from an old gun replace that section of the barrel.

Second problem. I would not expand the air chamber because doing this would take longer for you to fill the air chamber still having a FPS very close to the original.

I hope this helped you. :)

Very cool! Glad you like it. You can keep pellets from falling out of the barrel with a bit of paper/tissue as wadding, just like an old muzzle loading musket is loaded. I don't have a faster way to load pellets.

Spenceravery (author)2013-08-13

I have a problem with this, I sealed the bb with hot glue just as it said, and put it all together, and there Is a leak coming out of the end of the barrel, I am confused and kinda aggravated.

probably is the O ring. Put some pipe thread paste on it and it should seal better.

6854 (author)NightHawkInLight2015-09-16

how does the air from bicycle pump go into the chamber?

LucianP7 (author)68542016-09-12

from the shrader valve, stop askking.

airsoftfunny (author)2013-09-28

Could you show how to make a magazine for it

BostonS (author)airsoftfunny2016-01-31

i reckon for what its worth make a 'magazine' that you can manually (a rod that goes into the mag) push up a bb through a x cut piece of paper into the barrel

I imagine that would be quite difficult, but you could probably make some sort of speedloader device.

6854 (author)2015-09-16

how does the air from the bicycle pump go into the chamber? Please respond, I'm thinking of building one. Thanks :)

NightHawkInLight (author)68542015-09-16

Through the schrader valve

6854 (author)NightHawkInLight2015-09-18

how far or what fps does it get

6854 (author)NightHawkInLight2015-09-17

what is a schrader valve? And also how far does this shoot or what fps does it get, thanks again.

6854 (author)2015-09-16

how does the air from the bicycle pump get into the chamber??

jjack08 (author)2015-06-29

This is just awesome. What's your favorite replica weapon?

DaltonLee66 (author)2015-06-06

How do you reload

DaltonLee66 (author)DaltonLee662015-06-13

I made it but do you side the pellets down the barrel or what

Yes, you slide pellets down the barrel. You can use a bit of cotton to hold them in if you don't want them rolling out.

DaltonLee66 (author)DaltonLee662015-06-13

NightHawkinLightb can you help me with this

DaltonLee66 (author)DaltonLee662015-06-13


DaltonLee66 (author)DaltonLee662015-06-13

NightHawkinLight sorry auto correct

DaltonLee66 (author)DaltonLee662015-06-13

NightHawkinLight can you help me

matt.fletcher.925059 (author)2015-01-09

Hey NightHawkInLight
Just wondering if you fire it with the compact pump attached?
I havent been able to find any info regarding it .. but I just envision alot of back pressure extending the pump out at a speed that could injure ... which is probably wrong lol

It's fired with the pump attached. It doesn't cause any strain or back pressure.

Thats GREAT news! Thanks man! :D

steven.kettles (author)2015-01-07

Actually going to try this DIY.

I did a article about the best sniper rifles

cangcimen416 (author)2014-07-07

what is brake line,and where can i buy it?

Bowen2002 (author)2014-05-19

Is there walmarts in the UK? I live in the US so i wouldnt know.

Jai Burlingham (author)2014-04-16

So for some reason, it seems springs aren't available in the UK. It's pretty hard to do any DIY projects in this country.


I disassembled some cheap airsoft guns and I may have found a suitable spring as well as a barrel. That just means I need the appropriate nuts / washers etc and the PVC. They are also hard to find though. I mean, don't people need it (for the proper use) like plumbers? I wonder why nowhere sells it then. And yes I have looked around all the DIY / trade stores :(

Well, I meant England, I don't know about the other countries in the UK, but I'd imagine it's the same.

Robotic_not_so_genius (author)2013-09-05

Can you make a video on how to make a cheap holographic site? And another modification is you could a make trigger instead of using the washer for even better accuracy

How would a trigger improve accuracy? How would that even work...? It would also completely change the whole design. You could probably make a grip out of wood or something though, or modify a pistol grip to put over the air pump and hot glue it on.

You might as well just buy a cheap optic rather than trying to buy one too. I know you can buy cheap scopes from China on Ali Express for like £5 ($8.40) and a red dot like the one in the video for only about £12. Just takes a long time to arrive.

gemoney (author)2013-11-29

can u make darts for it

68tobroadway (author)gemoney2014-04-04

yes you could easily make darts just like the darts for Blackhawkinlight's video for the darts in his mini cannon or you could do a variety of different things like a barrel that fits blow darts it's about 3/8 inch I think but could be wrong

knexbug (author)2013-12-28

you are awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

knexbug (author)knexbug2013-12-28


knexbug (author)knexbug2013-12-28

so dont think i do

knexbug (author)knexbug2013-12-28

i dont just do knex

Jake Griffin (author)2013-12-03

That is so sick I made one, best homemade on YouTube for sure!

gemoney (author)2013-12-01

how much fps

Jonesy42 (author)2013-10-05

Love the 6mm brake line barrel design! I'm going to make one slightly different, with a modded sprinkler valve for trigger and a bigger air tank for more yeah :)

princeaero (author)2013-09-20

thats cool how come about the idea

treeman778 (author)2013-09-07


SmartJoe (author)2013-09-07

About how much should this cost?

KaoticBoss (author)2013-09-01

I went to auto zone, pep boys, and Reilly auto parts and all 3 only have 6.3 mm and 7.9 mm brake lines. Do you know where else i can get brake lines?? the 7.9 brake line fit the BB but it was'nt as snug as it was in your video.

What about standard sizes? Metric may not be what gives you the best fit.

Spenceravery (author)2013-08-15

I even put some special grease around the o-ring and it still leaks

Chakolichous7 (author)2013-07-21

you could add a portable compressor instead of a bike pump.

xboxmatthew (author)2013-07-20

Nice thing to pic how did you get the idea of that

About This Instructable




Bio: I like turning boring things into awesome things! Usually on video.
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