Introduction: Semi-automatic 7 Shot Knex Rifle

A semi-automatic knex rifle with 7shot bottom loading magazine that has a very powerful shot, but a long loading time.

Step 1: Make the Barrel

Pretty simple. Look at the picture.

Step 2: Make the Stock

Also simple. Look at pictures

Step 3: Make the Trigger and Firing Device

Step 4: Make the Magazine

1)Make this
2)Make this
3)Add this to step 1
4)Then add this to steps 1+3
5)Like this
6-8)Add step 2 to steps 1,3,4 so that the yellow is pointing away from step 4.
9)Add blue supports
10)Then add the bullet support system
11)Finished

Step 5: Make the Connector

Simple. Just make this.(the red is held by a green attached to it.)

Step 6: Connect

Connect 4 to 5 1 to 4 5 to 3 3 to 2
To get this

Step 7: Loading

1)Take these greens off
2)Take of these 3 rods
3)Got 7 heavy rubber bands and 2 weaker ones?
4)Take one of those heavy rubber bands and stretch it from the wheel to the front of the gun then rotate the wheel backwards until it clicks
4a)Repeat 6 more times then make sure the rubber bands are inside between the white connectors
5)Add the blue rods back
6)load the bullets so the orange is toward the back on the gun load between 2-3 bullets per time until you get 7 into the magazine.
7)Add the mag (spring) and yellow rods back
8-9)Add those 2 weaker rubber bands to the spring
10)It should look like this, but with 6 more rubber bands
11)Your ready to fire, have fun but don't shoot your eye out

Step 8: Credits

Thanks Beddbug2 for the first rbg that shoot bullets
https://www.instructables.com/id/semi-automatic-knex-pistol/

Comments

author
buttons03 (author)2009-12-31

bad. trigger mech dosent even work.

author
The Jamalam (author)buttons032010-12-24

Yep, it does.

author
Ukiarue (author)buttons032010-07-05

i built this a while back, loaded... 8 shots lol, and shot it, fired full auto cause the trigger couldnt catch the ratchet thing. its a decent gun being a semi auto slingshot rifle...

author
lollolman148 (author)2010-10-31

ouch my eye i need a plaster

author
14r31337 (author)2010-08-27

I see all those comments on it doesn't shoot, and I'm wondering whether it does or not.

author
14r31337 (author)14r313372010-09-07

It works, I can vouch for it.

author
lioneatr (author)2009-05-02

is this 3 thick???

author
poptart432 (author)lioneatr2009-06-03

yea

author

no its 12 soz tok me a second to see it 2 ur right its 3

author
_kira_ (author)2009-08-11

holy fudge i just loaded the rubberbands and pressed triger then the thing xploded in my eye!

author
knexaddicted (author)_kira_2009-08-17

lol that med me laugh as i was scanning thru comments and i red urs and u med me laugh sos for laughin at ur pain.... r u ok?

author
~Aeronous~ (author)knexaddicted2010-04-14

nERD>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>:P

author
mashedpotato13 (author)_kira_2010-04-04

Same, but I had glasses. NOt in the hospital, are you?;)

author
Raikou-san (author)2009-12-15

Seeing all the comments about how it explodes makes me want to make it just to see it explode. :D

author
cerj (author)Raikou-san2010-02-11

 it's kinda like being poked in the eye with a sharp stick.

it's kinda funny but hurts like hell.

author
cerj (author)2009-06-30

ouch -.- the snowflake that holds the bands just exploded. it's a self destructing k'nex gun!

author
An Villain (author)cerj2009-07-11

i know the feeling, i once fired the entire snowflake with the white rods on, RAZOR RIFLE!!!!!!!!!!!!!!!!

author
cerj (author)An Villain2009-07-13

ROFL

author
An Villain (author)cerj2009-07-13

i know, same thing happened with bunduk's semi auto RBG pistol, except i launched the Mechanism, barrel, trigger, and supports. all i had left was the handle.

author
psharpep (author)An Villain2009-11-25

Haha it's the bullet that shoots guns!

author
NYPA (author)An Villain2009-11-22

I bet you were like WTF?

author
An Villain (author)NYPA2009-11-23

yes, it was cool though because it exploded and shot stuff everywhere, and then i died. 

author
cerj (author)An Villain2009-07-14

LOL It's a handle that shoots guns!

author
thomaswatton (author)cerj2009-10-31

LOL!!!!

author
Skaptor (author)cerj2009-08-06

or a gun that shoots handles

author
An Villain (author)cerj2009-07-14

yep, the modified grenade launcher, uses shells.

author
Merugop (author)2009-08-05

Please better picture please

author
lioneatr (author)Merugop2009-09-22

yeah cmon cerialy

author
cooldoodjak (author)2009-09-18

its a good try but i shot it and it exploded and badly broke 2 of my fingers hahahaha =D

author
Cam R (author)2009-08-08

It looks like a really cool gun, but I can not work out how to make the trigger! Could you post some more instructions for it?

author
mgbgt (author)2009-07-20

If you lower the stock and move it out a bit it is much easier to aim.

author
Dirtyboyy (author)2009-07-08

no ! , i have made this gun for test and the weel to hold the rubberbands breaks off ! :S wtf he can max shoot 50 feet ! :S allricht he is funny :D , bud try to make a better gun than that ( more stronger )

author
Acepilot42 (author)2009-06-26

are u 4 cerial? this was soooooooooooooooooooooo easy to build

author
noob builder (author)2009-06-18

DARNIT! i destroyed the gun just when i got the right RB's omg! lets builda again!

author
UZI dude (author)2009-06-15

cool gun

author
noob builder (author)2008-10-31

Layers?

author
Superpoopa (author)noob builder2009-06-13

3

author
zapple (author)2009-05-26

veary unclear. how do you shoot it? let off the trigger?!? i need help!!!!!!!

author
Ikedog1995 (author)zapple2009-06-09

well this is very late and you've probably already destroyed the gun but its semi automatic. you probably loaded it wrong if it doesn't work.

author
K-Dawg (author)2009-05-07

bad pic

author
K-Dawg (author)2009-05-07

need better pic!

author
The Jamalam (author)2009-04-05

plagerism...

author

Who posted it first?

author

bedbugg

author
Bwbt1 (author)2009-03-30

e

author
An Villain (author)2009-03-28

your black clips are red i notice

author
Knexagon (author)2008-03-27

To everyone: I am the laziest person ever I know, but I've been working other stuff now and have been to busy to care about knex. I am sorry for this and I may get back on some other time. My knex trebuchet is probably that last thing ill post for a while.

author
The Jamalam (author)Knexagon2009-03-21

hehe.

author
ILIKEPIE333 (author)2009-02-03

I made a different barrel for this to make it a pistol
just three yellow connectors on a blue and put it on the top blue rod where the original barrel was
it is the same using it just as a rubber band gun
I have not tested it with the bullets yet
so dont think I knew that the bullets had crappy range or not because I do not
I used average thick rubber bands, #64 I think

author
ILIKEPIE333 (author)ILIKEPIE3332009-02-03

it does not work with the bullets

About This Instructable

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Bio: Some kid that likes creating things or viewing them to see the science behind them.
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