Introduction: Failed Knex Gun Concept - CQB Assault Rifle

Picture of Failed Knex Gun Concept - CQB Assault Rifle

I normally don't make concept guns, but I decided to see if this one mech I thought up would work. It works by having a ratcheted elastic powering a rotating firing pin. It all worked out on paper, but when actual building came around; this gun failed to shoot. But I was satisfied that the mech was possible, and functioned at all. I did take pics of the "completed" gun for you all to see. 

This gun on paper would have shot 25ft at about 300-500 rpm at an estimate. 

Now for the pics of the gun below.


PotatoCoffee (author)2013-04-17

Haven't posted for ages!

wabawaba (author)2012-02-18

I just finished up with my full auto smg that is gunna run off a drill. Its been a prototype for a few months and Its gunna be awesome. Even though it only has a range of 25-30 feet. It shoots oodammo which makes the range quite decent.

LvNo1000 (author)wabawaba2013-01-30

Do not post it here please. That doesn't have anything to do with commenting on *this gun*.

Sharir1701 (author)2012-06-24

so this is an SA 3252? it's not new man, you didn't think it up. also, i made a much better version that did work.

Kinetic (author)2012-04-29

Cool gun man. Kind of based off of Oblivitus's concept? I made something a few months back that is kind of similar. I'll see if i can dig it out.

Knex.X (author)2012-02-17


beanieostrich (author)Knex.X2012-02-17


Knex.X (author)beanieostrich2012-02-23

ah ha! oh wait..... hmmmmmmmmmmmm

beanieostrich (author)Knex.X2012-02-23

Having a hard time thinking? Its alright.


Knex.X (author)dr. richtofen2012-02-27


H1T4TCH1 (author)2012-02-23

Nice try!

You always make so many pics, lol 0.o :P

beanieostrich (author)H1T4TCH12012-02-23

Thanks. :) I take a lot of pics because I like to show many angles/areas of the gun off.

~Meme~ (author)2012-02-17

Yeah, im going to get 1000 knex pieces for my birthday in 3 weeks so I can invent better things!

beanieostrich (author)~Meme~2012-02-17

That sounds pretty good. :)

~Meme~ (author)beanieostrich2012-02-18

Yep ;) Im planning on a semi auto Aug A1 using louis's mech.

mettaurlover (author)2012-02-17

Have you figured out which part causes it to fail to shoot? I think that you could get at least a little more power out of the mech if you used a drum instead of a raw axle; two circles with 8 white rods connecting them would give the bands MUCH more power to actually move it.

dr. richtofen (author)2012-02-17

Nice idea!

Indeed it was. :) If only it would have worked lol. And thank you.

Lol, no problem!

~Meme~ (author)2012-02-17


beanieostrich (author)~Meme~2012-02-17

Thank you. :)

beanieostrich (author)2012-02-17

Thanks. :)

Vaetheon (author)2012-02-16

nice idea

beanieostrich (author)Vaetheon2012-02-16

Thank you. :)

Vaetheon (author)beanieostrich2012-02-17

your welcome :)

beanieostrich (author)2012-02-16

Thanks man. :)

About This Instructable




Bio: Hi. I've sold off about 99% of my k'nex, but I still come here to check in on instructables, every 2 weeks or ... More »
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