Introduction: Knex Grenade With Firing Pin

Picture of Knex Grenade With Firing Pin

A simple yet effective grenade. It has a "door" in front, a hatch for putting ammo in (on the back), and a pin that is locked in place. This grenade is also very small and easy to build (perfect for beginners).

Step 1: Required Pieces

To make this grenade, you need:

white: 3
Blue: 2
Yellow: 4

Grey, 1 slot: 3
Yellow, 5 slots: 6
White, 8 slots: 3

Black "Y" connector: 2
Black socket connector: 1
Tan connector: 2
Grey spacer: 1

Step 2: Building the Body

Picture of Building the Body

Yeah... pretty self-explanatory.

Step 3: Building the Door

Picture of Building the Door

Again... easy peasy.

Step 4: Building the Pin and Hinge

Picture of Building the Pin and Hinge

Yeah... easy.

Step 5: Building the Hatch

Picture of Building the Hatch

>_> need any more explanation?

Step 6: Putting It Together

Picture of Putting It Together

Attach like so. The bottom of the door (the side without the gray connector) should just rest into the y connector on the body. When the door is in place, push the pin through until it clicks into the socket connector. (images 2 and 3 are different angles.)

Step 7: Loading the Grenade

Picture of Loading the Grenade

You are finished! To load the grenade, push up the blue part of the door, insert green rods, and close the hatch. When you are ready to throw it, hold the grenade vertically in your right hand with the door facing away from you. Next, pull the pin slightly towards you, and then out. This will release the door. Finally, chuck it at your target. Have fun!


benjamin2006 (author)2016-02-12

coooooooooooooooooooooooooooooooooooolllllllllllllllllllllllllll! im about to build

SonicX 22 (author)2011-01-28

i just love knex grenades!

mberg (author)2010-08-23

in a way, it acts like a real grenade

mberg (author)2010-08-23

nice. i made a wicked grenade that looks like that but is totally different. i tryed to post my grenade but my camera is acting stupid. i was supose to post it about 2 monthes ago

skate31 (author)2010-07-30

i find this grenade vrey good because it dosen't use rubber band and its easy to make but the radius is low . i still give it 5 stars

a_person (author)2010-07-14

nice grenade... tho the instructable could use some help

H1T4TCH1 (author)2010-07-14

just made it... i'm now gonna test it ;)......................... yeah it's ok, the radius is not great, but i like it ;) 5*

fauge7 (author)2009-12-30

very nice grenade best grenade that i  also
made i made 2

luckyone (author)2009-12-09

very nice,i made 4

thomaswatton (author)2009-07-10

my new faviourite grenade before it was iac's wart bomb (it exploded really well but used a ton a pieces 4 a grenade) 5* and faved

chopstx (author)thomaswatton2009-10-24


IAC's Wart bomb..................

thomaswatton (author)chopstx2009-10-26

wat bout it?

chopstx (author)thomaswatton2009-10-26

It's WAR bomb not WART bomb.

thomaswatton (author)chopstx2009-10-27


chopstx (author)thomaswatton2009-10-27


thomaswatton (author)chopstx2009-10-28


chopstx (author)2009-10-24

How does this explode? Rubberbands? Or does it just fall apart?

Please help!

An Villain (author)2009-08-05

the most realistic grenade on this site, spoon, pin, and shrapnel 5*!

thomaswatton (author)An Villain2009-08-31

Yes it is a fantastic knex grenade, but no it does not have spoon but if you read my comment below you will see that i have made one with a spoon which flings off and when this happens it explodes (usually in mid air which is cool because you don't have to throw it at the horund)

An Villain (author)thomaswatton2009-08-31

the "door" is the spoon.

thomaswatton (author)An Villain2009-09-01

Wel li guess you could call it "the spoon" but it isnt really a spoon is it. Google spoons on grenades and they won't look like that.

An Villain (author)thomaswatton2009-09-01

it functions like a spoon, i don't care what it looks like.

thomaswatton (author)An Villain2009-09-02

No it functions nothiing lyk a spoon it does not fling off it mearly falls off and a spoon does not release sharpnel when it comes off.

An Villain (author)thomaswatton2009-09-02

it is close enough, this is a functional, realistic grenade, end of story.

thomaswatton (author)An Villain2009-09-02

Start of story again lol, yes it probably is the most realistic grenade but no it is no where close to being a spoon, it is more of a hatch if anything.

An Villain (author)thomaswatton2009-09-02

it is like a spoon, but it does not function like a spoon, you are right.

thomaswatton (author)An Villain2009-09-03

Ok i guess we are both right, so i am gad we have settled this nnow lol and hmmm!? lol

An Villain (author)thomaswatton2009-09-03

ok, it is settled. and can you delete your extremely long HMM comment? because it is so long the reply button is covered by the contest panel.

thomaswatton (author)An Villain2009-09-04


An Villain (author)thomaswatton2009-09-05

yeah, it sucks.

thomaswatton (author)An Villain2009-09-05

U SUCK! lol

An Villain (author)thomaswatton2009-09-05


thomaswatton (author)An Villain2009-09-06

I was joking lol sorry.

An Villain (author)thomaswatton2009-09-06

i know.

charge11595 (author)An Villain2009-10-05

Wow, so many replies!

An Villain (author)charge115952009-10-05


thomaswatton (author)2009-07-10

I've just done a mod to this grenade wat i did was switch round a cuple of pices and add a spoon 2 the grenade and attached a few rubberbands to it. So now when u pull the pin out your hand is the only thing holding the spoon down so when u throw it the spoon flys off. This causes the hatch to be forced open and highly increases the blast raduis of the green rods. This also alows the grenade 2 blow up in mid air so it does not have to be thrown at the ground P.s sorry 4 the essay

An Villain (author)thomaswatton2009-08-31

do you have any proof?

thomaswatton (author)An Villain2009-09-01

At the moment no, becasues I have been quite busy so i have not taken a photo yet but i might soon (if i can be arsed lol). And if you don't believe me i really don't care.

An Villain (author)thomaswatton2009-09-01

oh, okay.

thomaswatton (author)An Villain2009-09-02


An Villain (author)thomaswatton2009-09-02


thomaswatton (author)An Villain2009-09-02

facy facy thingy tongue thingy... that is what it is called lol!

An Villain (author)thomaswatton2009-09-02


thomaswatton (author)An Villain2009-09-03

Lol i hope you know i was kidding lol its just a face lyk these :D :) ;) :( XD and so on...

An Villain (author)thomaswatton2009-09-03

yeah, i know you are kidding, they are called smileys.

thomaswatton (author)An Villain2009-09-04


An Villain (author)thomaswatton2009-09-05


thomaswatton (author)An Villain2009-09-05

yh? lol

An Villain (author)thomaswatton2009-09-05


About This Instructable




Bio: Hey there! I am here to make k'nex weapons that are innovative, different, and fun! Next on my list to make: a semi-auto gun ... More »
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