Introduction: Knex AR-12 Prototype II (How to Build)

Picture of Knex AR-12 Prototype II (How to Build)

I got enough requests from various members to post this gun. This gun is very simple and does not eat up too many of your parts. Its easily customizable for sights, scopes, and a grip.

Step 1: Stock

Picture of Stock

This is the stock of awsomeness. Follow the pics.

Step 2: Mag/Barrel/Trigger

Picture of Mag/Barrel/Trigger

Simple, follow the pics.

Step 3: Handle and More Barrel

Picture of Handle and More Barrel


Step 4: Assembly

Picture of Assembly

Very Simple.

Step 5: Yayz! You Earn a Cookie!!!

Picture of Yayz! You Earn a Cookie!!!

No really, you do. Show me a pic of the completed result.


mahmel (author)2011-07-01

You're getting better and better dude

beanieostrich (author)mahmel2011-07-01

Thank you dude =D Those types of comments encourage me to build better =D

mahmel (author)beanieostrich2011-07-02

Cool, perhaps it's time to make something different than a gun with a standard mag and ram, try to make some concepts and build them!

beanieostrich (author)mahmel2011-07-02

Ok =D

mahmel (author)beanieostrich2011-07-03

Perhaps try to make a pump-action gun. Pump action gives a high rof imo

beanieostrich (author)mahmel2011-07-03

Good idea =D

mahmel (author)beanieostrich2011-07-03

Good luck:)

beanieostrich (author)mahmel2011-07-29

Ive been doing removable mags lol =D

Try make a revomable mag, pump-action shotgun, or a slingshot gun with a mag.If you do try these, I look forward to seeing what they turn out like.

P.S. I've always been a fan of you guns, you've got a great designing capability and getting a strong build in a good looking gun.

james4 (author)2012-07-11

I would build, but I made project deviance.

beanieostrich (author)james42012-07-14

Deviance was the better one.

james4 (author)2012-07-10

You know, duck tape is like the force.
It has a dark side, and a light side.
And it holds the universe together.


beanieostrich (author)2012-05-05

Oh really? I'm actually here quite often, I just don't comment very often. But good point, he did spam by posting a link to a remake of a rather terrible quality gun.

~Meme~ (author)beanieostrich2012-05-05

It kinda just made the gun 'corny' and over done. I'm glad you are still active!

~Meme~ (author)2012-05-05

Beanie's been inactive for months.And kinda rude.

arjun1 (author)2012-04-13

I am wondering to post a 30 bullet mag gun based on this...
Should I???

SumRndmGuy (author)2012-02-08

Is the trigger always so hard to pull...mine seems to take a lot of force to make the gun fire D=

beanieostrich (author)SumRndmGuy2012-02-08

That can't be right. Back when I had this gun, the trigger pull was fairly easy. It shouldnt need a ton of force to pull it.

CODKING (author)2011-09-19

on pic 13 i cant get the white rod to go on the y connecter help please

jackster908 (author)2011-07-25

Looking for a decent gun to build for too long. Think I've finally found one :D.

Nice =D If you would happen to build, can you get a picture of it perhaps?

Flatout Knex (author)2011-07-15

i will build and post soon like Monday k with all my mods

That sounds cool =D

srry cant this week im too busy

Ah its ok =D New shotgun tomorrow =D

BALLISTA (author)2011-07-12

What's the range? I'll build soon if it has nice range and power. I might even do some possible epic upgrades on it when I get the chance. And then if you want you can edit them into the instructable.

beanieostrich (author)BALLISTA2011-07-13

This gun can get 55ft with 2 #64 bands so think what it could do with 4. The trigger could survive a nuclear blast =D And if indeed you do manage to get a pic, I will edit into the ible =D

BALLISTA (author)beanieostrich2011-07-13

Will do. It might be more than one picture though, as I'll probably do several upgrades. 55 ft's actually pretty good for a conventional repeater. But if, and when I do build this gun I'll brief you on the upgrades before I show the pictures. Oh, and one last thing: 5* and a favorite as respect from me to you,normally I don't do this unless I see the gun has potential and is extremely good with a far range that packs a deadly blow behind it, and your guns have it all. Like people said, you are getting better than you normally started out. And that's just a compliment from me. So once again, 5* and a favorite my friend. :)

beanieostrich (author)BALLISTA2011-07-13

Well thank you =D Ill be ready if and when the gun and mods are done =D

TheAwesomestDude (author)2011-06-27


Thank you man =D

your welcome =D

Ive installed the foregrip to the Creeping Death. It also serves as a carrying handle =D


That foregrip improves aim by A LOT. Now its time to install a good scope to the gun.

that sounds like a plan

But you wont like the ammo it needs.

why? what ammo

The ammo is a red rod with a MELTED tan clip. The clip is melted to the rod XD Its the only way it will hold up.

i agree i wont like it lol

Well its the only way it can hold itself together against the 6 angry bands. Other than maybe gorilla glue.

true you have to have ammo that works =D

And this ammo is probably the most deadly.

yes i trink it is

Secret independence day gun coming up!!!

ok cool does anyone else besides me know what it is or is it a secret to everyone else

I will tell you in a Message =D

War Hawk One (author)2011-06-28

he beanieostrich, copy paste this link. you'll see that i made a video from your gun.

I saw the video =D

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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