Introduction: LAW Rocket Launcher Replica W/Flash Cotton Muzzle Blast [HD Video Tutorial]

This rocket launcher uses flash cotton (gun cotton, nitrocellulose) to simulate the muzzle blast of a real rocket. It is an excellent prop for home movies, or just a great addition to a Halloween costume. Needless to say, it should not be fired indoors or at other living creatures. Flash cotton does not usually cause burns to the skin, but that does not mean it never will. It does produce a real flame so it also should not be used in dry or flammable environments.

Flash cotton can be purchased many places online, or at local magic shops for quite reasonable prices.

The total price of this project was about $35.

Midwest Fastener Corp. 2790 G Power Tool Switch
4' 12 gauge wire
Three 1 1/2" x 3/16 Machine Screws
Five 3/16" Nuts to Fit Screws
Nichrome Wire
6 Volt Battery

3' of 3" PVC Pipe
Two 4" x 3" PVC Reducers
1.5" PVC End Cap
PVC Cement

Parts for Scope:
1" x 1" x 1/2" S x S x T PVC "T" Fitting
1/2" Close Threaded Pipe Nipple


arondabomb (author)2013-05-01

Where can I buy the trigger? (or one like it that will work)

tfrost3 (author)2012-08-05

Good job, but doesn't resemble a LAW rocket launcher in the slightest

c3ralki1l3r (author)tfrost32012-10-02

its still pretty awesome

N331_Rox_12 (author)2012-05-05

thats so cool man!!!!!!!!!!!

tinker234 (author)2012-03-09

i wonder if i set this up on a hill with a friend operating waiting for the guest then a simple air puff next to them they think there being attacked by a man wth a rocket launcher

Airsoftgeek (author)2012-02-02

Combine with landmine add a grenade and BAM instant grnede launcher

R.JStorey (Rodders) (author)2011-11-08

like the muzzle flash, but combined w/ your airsoft mine it would be epic

i agree

That's a really good idea! You should try it!

dirt action julian (author)2011-10-14

how much will it cost all tother

$35 without the flash cotton

spiffy956 (author)2011-10-18

A nice idea I thought of when looking at this was to add the NERF Titan AS-V1 missile launcher to the front and to have the fire part in the back. I would make it myself but I have too much homework. Maybe in the summer...

dirt action julian (author)2011-10-13

I am so exited to make one of thows thank you (-: (-: (-: (-: (-: (-: (-: (-: (-: (-:

ilikejellybeans (author)2011-10-12

hella cool

Cheezpaper (author)2011-10-06

The flash should be on the other side.

Yeah but what good is it there where you can't see it. This is meant for fun, not perfect realism. If you wanted to it would be no big deal to wire it the other way, or on both ends for that matter.

I'm thinking of making one of these but modifying the design to fire a model rocket engine from the front and have the gun cotton part in the back. Do you know if twelve volts will still work with two sections of nichrome wire?

A 6 volt battery should still work, but there will be a long delay of holding down the trigger before the wires get hot enough.

Okay, thanks for the info. I wanted to make sure before I tried. I'll post pictures/video when it's done.

bioboy725 (author)bioboy7252011-10-07

That should have said six volts

Football viking boy (author)2011-10-05


About This Instructable




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