Introduction: Knex CSAP

Picture of Knex CSAP

Hello instructables, and I have yet another Knex pistol but the complete opposite. A compact slide action pistol. I have seen one other person do this and his did not work so I'm saying this is the very first working compact slide action pistol with a mag in the handle like a real pistol. It's not the best looking, the farthest shooting, or the most reliable, but it's something different and new. I've seen many people say
It's impossible but guess's not.

Working slide action
Removable 5 round mag
Looks ok
For the most part reliable

20 foot range
When more than 5 rounds are put in the mag,
The slide pops off
The slide is held on by rubber bands

It's pretty easy to build based on the pics. I'll post a vid soon just so you can see how it works.



Linkin_J_Knex (author)2015-09-12

wow I really want to build this!!!

BasketballProdigy14 (author)2015-07-13


Mickeyriffe (author)2015-05-02

what prices did you use? I'm tryna build it and it is difficult off the pictures...

Knextremely stupid (author)2015-03-14

Was it modeled from mine or someone elses

This was completely my design, I got the inspiration from E Purblis Un Umm. He made a compact slide action pistol but it completely failed. I started from scratch and somehow it worked fine.

Knextremely stupid (author)2015-03-14

Btw check out my new pistol I think u could make something awesome out of it

Knextremely stupid (author)2015-03-14

Lol I think that u beat my slide pistol because it's works

Thanks, I think the only reason yours did not work was because your pin guide looked incomplete.

sandroknexmaster (author)2015-03-06

Looks good!

How reliable is it?

Well just as long as no more than 5 bullets are in the mag, it's pretty much 100%. Every once in a while a slide pops off.

didexo (author)2015-02-24


Lucas The Boss (author)didexo2015-02-25

Thanks man, do you know if anyone else has succeeded to do one like this?

didexo (author)Lucas The Boss2015-02-26

Yes, I've seen ones similar to this. The Dunkis made one, and I've seen some other similar ones.

CorgiCritter (author)2015-02-24

Hey, that's pretty cute, man! I like its slightly chubby looks. I may or may not build it, I have not had good experiences with SA pistols with the slight held on by rbs, makes it look a tad messy and often don't work too well. :(

Still, I like how compact it is, good job! It must have been difficult cramming both a removable mag and a slide into such a small package.

Never seen one of those dark grey two slot connectors, I have only seen speckled grey and light grey ones.

I would love to see a video! Perhaps you could include your SMG thing in it too.

Thanks man, I've made a few slide actions my self and was disappointed with most I built. I was very happy with this one despite the Problems. It's still a very fun gun to mess with. I got the dark grey 2 slot connectors off eBay and have about 100 of them. I posted a vid, go check it out -
The vids not very good quality but oh well. I might make a vid of my smg pistol thing to.

I have seen the video. Yeah, I built Red's FN FiveSeven V1 3 different times, didn't ever work for me. Might build this though.

Perhaps I will began to build you SMG tomorrow. What I need to get one of these days are a bunch of grey one slot clips, as they make great ammo, but I lose them all the time.

Lucas The Boss (author)2015-02-25

Well it was kind of supposed to be short but since the trigger is so low, it would not hurt to extend the handle.

Zombiekiller-93 (author)2015-02-25

Really like this one as well as the MSMGP, another favourite added


About This Instructable




Bio: Knex builder here at Instructables. I build Guns, and, Roller Coaster. I currently build about 2-3 guns a month. I strive to post quality as ... More »
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