Introduction: Knex Gun: Thunderbolt Hand Cannon + Internals.

Picture of Knex Gun: Thunderbolt Hand Cannon + Internals.

Hey guys, I have another gun for you! This one is a futuristic K'nex pistol. It features a synthetic futuristic body, thumbhole grip, unique trigger, and it's a single shot. It seems to like shooting a grey clip and green rod the best, followed by white rods. The trigger blocks the pin very far back, and the mech only holds one #117 band. Still, it shoots very well. Next time you see these pieces they will probably be in a free flying slingshot, or a bullpup rail pin. (Why has nobody come up with one where the rail pin is pulled all the way back into the stock?! I might have to fix that myself.)

This is the perfect gun if you prefer to exclaim, "Oh, SICK!" when you see it rather then, "What a elegant design!"

That's right, it's jammed with features and looks to appeal to the COD: AW and Destiny crowd, and no one else. I don't fit in that category, and I just think it looks weird. You may not.


Fairly comfortable.

Looks... interesting?

Shoots 50+ feet.

Very sturdy. (8 layers, 9 in some spots.)

Long pin pull.

OK trigger pull.


Piece consuming for what it is.

Shoots all rods except green.

Shoots several connector+rod combos.

Nice sights.

Three layer trigger that feels like it came off of a TR.

So what do you think? Tell me in the comments below, and feel free to criticize your hearts out. I going to keep posting, expect more! And what do you think of the indoor pictures? Not too shabby, huh? Let's get to the internals.

Do not dry fire this gun! It can break the bullet lock.

Step 1: Internals

Picture of Internals

Here are the internals. Ask me if you have problems. (With the gun, not with anything else.) Have fun with your new gun. Unless, of course, you just wanted to see how it worked. That's OK too.

Do not dry fire this gun! It can break the bullet lock.


The Knex Inventor (author)2016-06-11

Looks kind of futuristic!

sandroknexmaster (author)2015-08-16

Looks good!

Kona-chan (author)2015-07-05

madr it, its bigger then i thought yet its rather small, having a tat trouble shooting

CorgiCritter (author)Kona-chan2015-07-05

Nice. :)

I'm sorry that it doesn't shoot that well. It was not built for shooting, that was just one of the features that came out of it.

But thanks for building my design!

Kona-chan (author)CorgiCritter2015-07-05

no problem buddy, but still, maybe you should note that it's not meant for dry fire because it doesnt like dryfiring
and it packs a real punch bro I'm using larger type oddammo
also sneakpeak for my new tactical pistol

CorgiCritter (author)Kona-chan2015-07-05

OK, yeah, the pin will hit the bullet lock and mess it up. I'll add that to the description.

That new pistol looks nice! I'll be sure to check it out when it's posted/

Kona-chan (author)CorgiCritter2015-07-11

the tac pistol was broken up. tried to make a Glock 17 but failed to do so once again :P

CorgiCritter (author)Kona-chan2015-07-11

Too bad. :(

Kona-chan (author)CorgiCritter2015-07-11

I got a sniper scope today, gonna make me a gun to slam it onto

CorgiCritter (author)Kona-chan2015-07-11

A knex scope, or a real one?

Kona-chan (author)CorgiCritter2015-07-12

well this picture should awnser that question

CorgiCritter (author)Kona-chan2015-07-12

Ah, OK.

Kona-chan (author)CorgiCritter2015-07-06

never said it messed up anything it just snaps off the connectors on the pin

CorgiCritter (author)Kona-chan2015-07-06

LOL, well when I dry fired it, it would mess up the bullet lock, so thats why I put it down like that.

dr. richtofen (author)2015-07-07

So, this took a bit longer than I wanted, but I finally got around to tinkering with this gun.
I took out the shooting mech, and just fiddled around with the general design.
It is two connectors longer than your gun, but that was kind of needed for a comfortable hand guard.
The handle is a little shorter than I'd like, but with the foregrip, it's comfortable enough.
It has a fake removable magazine in the top, that loads like some guns from the Borderlands series. When you open the lid, the magazine gets pushed up a bit, for easier removal.

All in all, I like it. It has an odd look, but I really like how you did the thumbhole.

Kona-chan (author)dr. richtofen2015-07-12

geef mij daar eens even heel snel de internals van

Oh man, that looks awesome! The handgrip/foregrip looks great too. Thanks for sharing.

JonnyBGood (author)2015-07-07

This almost looks like a smaller Competitor V variant lol. Awesome design!

CorgiCritter (author)JonnyBGood2015-07-07

Yup, that's what I thought. It wasn't an attempt at a copy, but it turned out that way. Thanks!

JonnyBGood (author)CorgiCritter2015-07-09

I know, how it goes great minds think alike sometimes. Just like I copied a lot of the functional features of another pump bolt action gun in zip3 with no idea that it was similar in every

CorgiCritter (author)JonnyBGood2015-07-09

Haha, yeah. :)

CorgiCritter (author)2015-07-06

Sure, and I just commented on it.

CorgiCritter (author)2015-07-06

It's gone. The trigger was not good and I was running out of pieces. But I have a pistol with a improved thumbhole grip and removable 5.56 magazine. I'll be posting that today.

That's a pretty boss gun! I know you said it looks weird, but I'm all about weird! XD

Btw how's your corgi?

Thanks. :)
As of six seconds ago, he's slightly hyper, but in a good mood. He is shedding like crazy, though.

Lol glad to hear he's doing great! I know lol, they shed a lot! XD

Yeah, it comes out in clumps of fur. It looks pretty bad to have those all over.

Lol I can imagine.

What else are you working on?

Nothing at the moment. Two days ago, I tried a K'nex slingshot, and that didn't work out, and neither did the rail gun I tried yesterday.

It's okay, same thing happens sometimes when I am working on a Lego creation. ;)

Working on a pin gun right now. It's turning out decent, which is nice.

Lol it's always nice if it at least turns out decent. X3

Carrot187 (author)2015-07-03


CorgiCritter (author)Carrot1872015-07-03


knexcreator141 (author)2015-07-03

Looks great man!


sonic broom (author)2015-07-02

Very cool looking! I think it has a little to small of a trigger guard but the trigger mech looks neat! Did you get you KNEX coaster working that you won?

CorgiCritter (author)sonic broom2015-07-02

Thank you, and you're right. It is too small. I still need batteries for the coaster. But I was able to assemble it OK.

sonic broom (author)CorgiCritter2015-07-02

Yeah I when I built your NAR the trigger guard was to small also but it was not a big deal. I hope you can get some batteries soon!

CorgiCritter (author)sonic broom2015-07-02

Yeah, I have pretty small hands, and I also go for what looks good, since trigger guards are mostly for looks on knex guns. But my next build has a pretty large trigger guard.

CorgiCritter (author)2015-07-01

Neat! I will check it out.

dr. richtofen (author)2015-06-30

It certainly looks interesting, a bit too fat for my liking, but certainly not bad. I agree with Lucas on that it looks like something Jonny would build.
Maybe the mechanism could handle more rubberbands with a sliding trigger, but it'd be tricky to fit it in, as it already looks "packed" on the inside.
The trigger guard seems a bit small, but that may be just me and my fat fingers.
All in all though, another nice gun from you.

Thank you, the trigger guard is a bit uncomfortable, but it could be removed and changed out for a handguard. It shoots fine with just one band, and with a long pin pull you don't want too much power on the pin. But yeah, the trigger is sort weak. I just wanted a change from the trigger style I always use.

No problem.
Yeah, having a lot of tension on a long pin pull isn't handy either, in a pistol. The trigger is pretty cool, and maybe could be made stronger with a bit more room on the inside.
I'd like to know how this gun'll look with a full handguard. You okay with me fiddling around with this gun?

Sure! Do whatever you want with it, that's why I posted internals.

Alrighty, cool~
I hope I can get to it tomorrow, as I have the photos for my SD instructions.

About This Instructable




Bio: I enjoy archery, knives, and building weapons. I used to build with K'nex.
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