Homemade Airsoft Silencer

ok, i got sick of seeing all these arisoft silencers online for like $50, and they really dont make your gun much quieter, so i decided to make a $4 silencer that works just as well as the $50 ones. Granted it doesn't look as good as the ones online, but for my uses it works fine. This is my first instructable, so sorry if i don't get it exactly right.

Step 1: Materials

heres what you need:

1 water bottle*
1- 1 foot length of 2in pvc
1- 1 foot length of 3/4in pvc
1 hose clamp, just big enough to fit over the neck of the bottle
cloth or old rags
paint (optional, but you really should paint it)

*Giant Eagle brand purified water. (i dont know if any others will work)

razor knife (be careful)
#7 or #9 drill bit (i think)
tin snips
hack saw (not pictured)
vice (to hold pvc)
screw driver (for installing)

Step 2: Cut the Water Bottle

Ok, using the razor knife, cut the label off of the water bottle. Then, cut the bottom off of the bottle, be really careful, it's easy to cut yourself. Then, insert the 2in pvc pipe as far as it can go and mark it at the end of the bottle. The pipe should fit very tightly, and you might have some trouble getting it to fit.

Step 3: Cut the PVC

Use the hack saw to cut the pipe where you marked it. I advise using a vice to hold the pipe in place.

Step 4: Cut 3/4 PVC

After that, measure the 3/4 pvc inside the bottle, it should come to about 3/4 of an inch to 1 inch from the inside of the neck, and should be flush with the end of the 2 inch pvc. Mark it and cut it.

Step 5: Drill Holes

Ok, this part probably takes the longest. Take the 3/4 pvc section that you just cut and put it in a vice, then drill holes through it at all angles, so that it looks like a hair curler.

Step 6: Wrap the 3/4 PVC

Wrap the piecs of pipe that you just drilled holes in with your cloth, I used old rags. Make sure that it can fit snuggly into the 2 inch pvc, and that the cloth doesn't cover either end. You may have to cut of rip it to get it to fit.

Step 7: Insert 3/4 Into 2

Insert the wrapped pipe into the 2 inch pipe, try to center it. If it is closer to one side, then wrap more cloth around the low side, or take some away from the high side.

Step 8: Cut Neck

The flash hider on my gun was too big for the bottle to fit over, so I cut the bottle so that it would fit. It was still tight, but it worked.

Step 9: Add Hose Clamp and Install

Put the hose clamp on the spirals on the neck, then slide onto the flash hider of your gun and tighten the clamp. How you paint it is up to you. I hope my instructible was useful to anyone interested.



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    31 Discussions


    9 years ago

    This is a great Instructable, but you need to add a main image of the final project to the intro step. Please do that and leave me a message when you have so that we can publish your work. Thanks!


    9 years ago on Introduction

    Im shure this does silence the majority of the muzzle sound, but the majority of the sound from an airsoft gun comes from the action of the spring inside of the gun driving the bolt, no matter wether its electric,or just spring operated. I would think that it would work best with the gas operated ones, because it silences the mussle blast. I made one for my paintball gun, and it does muffle the sound. You can still hear it, but it is hard to tell where its coming from

    9 replies

    yeah, must of the noise in my gun comes from the internals, but the silencer helps keep other players from knowing your exact location, especially in places where the internal noise just echoes around. Plus, it looks cool.

    If you want to enhance your silencer capabilities: On top of using your home made silencer; If you turn your firearm upside down and look at where the magazine meets the gun - you will find that there are spaces - This is where a good amount of those internal sounds you mentioned can escape. My advise is to take electrical tape and wrap it around your magazine several times until it creates a ring around it that no longer allows you to see the "spaces". Yes, it will look "different" however you may be pleased with the results.


    Reply 8 years ago on Introduction

    yeah, that's what airsoft silencers are supposed to be used for since co2 guns make more sound from the escaping gas than an AEG, where most of the noise comes from the gearbox and not the gas


    Reply 8 years ago on Introduction

    hmm sure about that??? weird. that would mean there's a massive amount of co2 leak there. :P but yeah blowbacks are like that i guess. (imo, it looks cool, but wastes gas and is unstealthy cuz its noisy) there's no way to silence the blowback, i don't think.


    Reply 8 years ago on Introduction

    in comparison... to... a real gun, you mean? haha. airsoft guns can only get so quiet. In every case, you still hear the action of the trigger, plunger hitting its end, etc etc. unless you put foam insulation all around ur gun.


    8 years ago on Introduction

    i made mine based on yours and i gotta say it works

    hungyhipo 2

    8 years ago on Step 2

    can you use a different type of water bottle and a different width of the pvc

    1 reply
    hungyhipo 2

    8 years ago on Introduction

    this wont work because most of the noise is made by the internal mechanism o but i give 200 stars for looks


    9 years ago on Step 9

    great idea for making one, gives me an idea for a silencer. also have you tried stuffing the space between the 2 pipes with foam 1 use ear plugs? they do like 10-40db by themselves an the small air pockets would give an extra muffle boost of like 1db or something