Slingshot Channel Firearms Excursion

[NamelessStain]

Bump (In reality, hoping for a day/time from J)

[JoergS]

No date yet, but it looks like it WILL happen - most likely in late September.

[JoergS]

I am getting closer to this project.

Seems that right now the "3D printer gun" issue is so hot that I don't really want to wait that long with my take on a home made design.

I have finished the plans on a relatively small pistol. Single shot, .22 caliber.

15cm (L) x 12cm (H) x 3,6cm (W). Weight should be less than 150 grams.

The whole frame can be sawed out of plywood. I want to make the barrel from a very common steel bolt (M12), simply because it will last longer than plastics and suitable drill bits are no problem. No lathe needed. In addition to the bolt and some plywood, you will need a few nails, wood screws and office rubber bands.

A true apocalypse gun.

I am considering a short trip (three days) to the US to complete the weapon. I'd publish the plans and the video when I am back in Germany.

What do you guys think about this?

[Stercutus]

What do you guys think about this?

Looking forward. Understand though that .22 zip guns are not too uncommon in the US. Most people won't show them publicly but there are plenty of them out there.

Are you going for "lowest cost" or "best shooting"?

[JoergS]

I can do up to .380 I think.

I want to make one that

a) shoots great
b) looks good
c) is compact
d) can be made without welding gear, and special parts
e) just household tools (power drill, jigsaw, file, screwdriver)
f) bill of materials under ten dollars
h) takes an afternoon to be made, without special skills

Complete plans would of course be provided.

[Stercutus]

I can do up to .380 I think.

I want to make one that

a) shoots great
b) looks good
c) is compact
d) can be made without welding gear, and special parts
e) just household tools (power drill, jigsaw, file, screwdriver)
f) bill of materials under ten dollars
h) takes an afternoon to be made, without special skills

Complete plans would of course be provided.

Sounds full of awesomeness. If legal and with a cheap permit I would be interested in making my one too.

[eeb]

Be sure you have some ammo lined up before you get here, for some reason. 22lr can be harder to find than. 223 or 9mm, at least around here.

[Redeyes]

All JoergS has to do is to specify what calibers he wants and how many and the collective stashes, gun shops, internet honey holes, and other ammo sources of ZS 045 will be searched for what is needed.

[Sworbeyegib]

Oh I'm giggling like a school girl. I can't wait for this.

[NamelessStain]

All JoergS has to do is to specify what calibers he wants and how many and the collective stashes, gun shops, internet honey holes, and other ammo sources of ZS 045 will be searched for what is needed.

Shit, I dedicate my ammo stash to making this happen. ZSC45 is on top of this and we will NOT allow this to fail!!!!!


We are ZSC45, this WILL happen!!!

[Thekapow]

Would'nt FPSrussia be the perfect guy to have on this project ? He has licens to make and shoot pretty much everything except nukes.

[Redeyes]

No. I believe Joerg intends to make and test these firearms and videos in a manner that does not endanger himself, friends or hosts.

[Doctorr Fabulous]

No. I believe Joerg intends to make and test these firearms and videos in a manner that does not endanger himself, friends or hosts.

Nor will he be enraging the types of peopel who will hunt him down and execute him or his coworkers later.

[JoergS]

Here is a first sketch... this design includes a barrel made from a screw. For .22 and .25 caliber sizes a 12mm (M12) bolt (1/2") is fine, for the .32 and .380 sizes I'd switch to M14.

The weapion has a core from 18mm plywood, and two outer plywood layers (8 or 9mm each). No springs, just rubber. Three nails are needed (one for the firing pin, two for the joints). A bunch of wood screws to hold the three layers of wood together.



What do you think?

[NamelessStain]

Here is a first sketch... this design includes a barrel made from a screw. For .22 and .25 caliber sizes a 12mm (M12) bolt (1/2") is fine, for the .32 and .380 sizes I'd switch to M14.

The weapion has a core from 18mm plywood, and two outer plywood layers (8 or 9mm each). No springs, just rubber. Three nails are needed (one for the firing pin, two for the joints). A bunch of wood screws to hold the three layers of wood together.



What do you think?

Definitely intriguing!!

I do have some questions for others out there which know much more than me.

1/2" bolt, drilled out for .25 ACP would leave another .25" of the bolt there.... so at .125" for a barrel thickness, what would be the potential for metal failure? It's that whole metal fatigue failure that concerns me. I'm definitely not a metallurgist, but years ago I worked for a specialty steel company and they had precise requirements for stuff like this.

I see the .22LR actually has more velocity and energy than a .25 ACP:
http://en.wikipedia.org/wiki/.22_Long_Rifle" onclick="window.open(this.href);return false;
http://en.wikipedia.org/wiki/.25_ACP" onclick="window.open(this.href);return false;

Thanks for the preliminary drawing JoergS!!

[JoergS]

For these low powered rounds, that metal is plenty thick. Also note that there are three hex nuts at the critical part of the barrel (the chamber). Even if the barrel would give, the hex nuts would prevent any serious dangers. What would happen is that the barrel would have a crack, and the hex nuts would be jammed.

[Doctorr Fabulous]

For these low powered rounds, that metal is plenty thick. Also note that there are three hex nuts at the critical part of the barrel (the chamber). Even if the barrel would give, the hex nuts would prevent any serious dangers. What would happen is that the barrel would have a crack, and the hex nuts would be jammed.

Using the hex nuts like a sleeve. Slick.

I may have to make up one or two when the plans get done.

[eeb]

All JoergS has to do is to specify what calibers he wants and how many and the collective stashes, gun shops, internet honey holes, and other ammo sources of ZS 045 will be searched for what is needed.

Good to know, I figured that'd be the case.

[JoergS]

I am already making those parts that I can legally manufacture here in Germany. Means, can't "chamber" the barrel-screw, can't complete the receiver face, can't drill the holes for the "hammer". But it is coming along nicely.

This way, I can probably complete the gun in the US within an hour or so

[JoergS]

By the way... lots of people probably don't know how to drill a nicely centered hole into a bolt without a lathe.

Here is a good link for a method that works fine:

http://vik-olliver.blogspot.de/2010/02/ ... iddle.html" onclick="window.open(this.href);return false;

[FrANkNstEin]

Are you going to work with a manufacturer to make this?

After all, it's an AOW, subject to NFA regulation and bad juju inbound if not following the letter of the law to the T....

[Doctorr Fabulous]

Are you going to work with a manufacturer to make this?

After all, it's an AOW, subject to NFA regulation and bad juju inbound if not following the letter of the law to the T....

How would it be an AoW and not a handgun?

[FrANkNstEin]

Smoothbore barreled gun that doesn't meet the required OAL and barrel lenght to be considered a shotgun.

So with a Stock, it'd be a SBS and without one, an AOW.

[Doctorr Fabulous]

Smoothbore barreled gun that doesn't meet the required OAL and barrel lenght to be considered a shotgun.

So with a Stock, it'd be a SBS and without one, an AOW.

I'd assumed he would have rifled the barrel. I couldn't find any regulation on how deep the rifling has to be. I'd assume it could be done with a hand tool pretty easily, since it's not required to be functional or anything beyond being there. I could be wrong, but I don't believe there's even a required minimum twist rate, so in an effort to meet the bare minimum requirements, one could use a fine, hard file and basically hand cut a very slow twist, two grooves.