Introduction: Easy Knex Harpoon Rifle

Picture of Easy Knex Harpoon Rifle

This is my first instructable, a knex harpoon rifle!

(it was takeing a lot of time to upload the photo's.-_-)

Step 1: The Barrel

Picture of The Barrel

1 and 2: make some of these, how more, how longer.

3: make 3 of these.

4: make 1 of this one, for the back.

5: make also 1 of this one, this is the handle.

6: connect the parts of 1 and 3 like this.

Step 2: The Tricker

Picture of The Tricker

2 and 3: make these

1: connect them

4: side view

Step 3: Connect It All

Picture of Connect It All

connect the parts that u make like the images

4: it will look like this.

Step 4: Add the Rubber Bands

Picture of Add the Rubber Bands

now add the rubber bands like the images

3: add a green rod to the rubber band on his place

Step 5: Load and FIRE!!!

Picture of Load and FIRE!!!

finaly, the fun begins

1: pull the rubber band to this point

2: the ammo

3: put the ammo like this

pull the tricker and...FIRE! plz dont shoot in the eyes of someone, it realy hurts!


FlipofEpic (author)2013-11-01

best thing ever

stevedude123 (author)2012-02-12

wow this is an amazing rifle
lol i accidently bruised myself with it :0

jonny-t (author)2012-02-12

Built in less than 1 hour - amazing!
The best weapon I have ever built - thanks very much.

hedzup456 (author)2011-06-09

not a harpoon-no strings attached
cant pull it back

harry599 (author)2010-03-20

VERY VERY VERY powerful, shot myself in the hand with it and it realy realy hurt, it even drew blood!!

very good gun,


techman26 (author)2010-01-21

how do you shhoot this thing

d4rksaber (author)techman262010-01-25

see step 5.

Kris007 (author)2008-11-17

Gun looks cool, I'm gonna shoot some of the whales in my basement now

d4rksaber (author)Kris0072009-10-15

??lol XD

tomboyRme1 (author)2008-09-17

your on big TRICKER

Trainman 2001 (author)2008-07-23

wat the frigg is a harpoon

It's a long sharp metal rod that they use to kill whales and stuff.


lol. :D

whales? a bit too big lol...

No, they were designed to take down whales. However if you look at the big picture whales do seem kind of big. lol :D

Daniel662000 (author)2008-07-24

Good first instructable, you should try to build a really cool airplane i don't think one has been done before.

dude stop advertising on other people instructables.

This isn't my gun!!! Well actualy it's a jet but it's not mine anyway. Daniel662000 was asking if there was a knex plane so I showed him this plane I saw.

bannana inventor (author)2008-07-24

This is a very good first gun but not very original though. 4.0 :D

I_am_Canadian (author)2008-07-23

Done millions of times before, but cool nontheless.

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