Bombshock Turns 10!

To celebrate, I've launched operation overhaul, and are adding several hundred new fringe books to the archives.

I Need HELP! "Like" and share with your friends on facebook. Put a link to bombshock on your site or blog. That's All.

You Are Here: Home » How to Make Weapons » Gun Articles & Information » How To Build a .22

How To Build a .22


the gun which I am about to explain how to build is an original style zip- gun. Other zip-guns have been made, but most have been of inferior quality and are very dangerous to operate. The gun I have constructed is easy to use and safe to operate.


Zip-guns where used during the gang war era because of their easiness to build and their small size. Many prisoners of have been known to construct zip-guns while in jail (but I have not heard of any prisoner escaping using a zip-gun).


You will need:

  • (1) ball point pen – approximately 5.3 Inches long (metal).
  • (1) Strong spring – approximately 1.59 Inches long (able to fit inside 2nd half and a little bit of the first).
  • (1) Strong metal bar – approximately 2.5 Inches long (able to fit inside pen).
  • (1) Strong small metal bar (a little bigger then the circumference of the spring and able to slide easily thru the 2nd half of the pen).
  • A few .22 Caliber bullets.


(1) soldering iron.


Please note: diagrams not to scale.

First untwist the ball point pen and take out all the insides (you may break them to get them out because they are not needed and should be discarded (see diag. A).

The pen (diag. A)

How To Build A .22 - A

Now take the metal bar (larger one) and attach it to the push button (see Diag. B).

Firing pin (diag.B)

How To Build A .22 - b

you can attach it by either shoving the metal bar into the bottom or by soldering it in place (please note: I recommend soldering the metal bar in place). Important – the metal bar must be attached in the exact middle of the push button (the metal bar will act as a striking pin and must be in the exact center so it will strike the middle of the bullet causing the bullet to go off).

With the metal bar now firmly attached to the push button, put the push button inside the pen like it should be (see diag. C).

Firing pin placement (diag. C)

How To Build A .22 - c

Now take the spring and slide it over the metal bar (see diag.D).

Placement of spring (diag. D)

How To Build A .22 - d

Now with the spring around the metal bar and the push button where it Should be, attach (by soldering or twisting, soldering preferred) the small metal bar to the metal bar (see diag.E).

Attachment of small metal bar (diag. E)

How To Build A .22 - e

Note: it might also be helpful to solder the small metal bar to the Spring along with soldering it to the metal bar.

Test of firing mechanism

pull back push button as far as it will go while holding onto the second half of the pen. Now let go and the metal bar (longer one) should snap forward and then return to its approximate starting position.

Finishing up

Placement of bullet:

A .22 Caliber bullet should now be placed in the 1st half of the “pen” approximately 1 1/2 millimeters in front of where the metal bar would be if the “pen” was put back together. Be sure to tape (or whatever you think will work) the bullet inside the casing or else the bullet, if moved, might go off accidentally (see diag.F).

Bullet placement (diag. F)

How To Build A .22 - f

How to operate:

Pull back on push button as far as it will go, then let go – the bullet has just been fired (easy, right?). If you wish to shoot another bullet, untwist the “pen”, take out the shell and reload (see placement of bullet).


the bullet will tumble when shot instead of the spiraling because the inside of the 1st half (the barrel) has no lands or grooves. Tumbling is good because the bullet will rip thru a target, but it does cause the bullet to be off target approximately 3-4 inches. Having no lands or grooves makes the bullet hard to be traced back to its source (no striations). If you wish to make lands and grooves, you can by taking a screw and twisting it inside the 1st half of the “pen” (adds striations to bullet). I would also advise you to cut off the tip of the “pen”. If the tip is left on, the bullet will still shoot, but it will blow thru the tip and send pieces of the pen flying in different directions (also causing the bullet to be off target.)

Optional: diagram-removal of tip

How To Build A .22 - removal of tip

How it should look when it is complete

complete diagaram (with tip removed)

How To Build A

Advantages & disadvantages


(1) one shot capacity-only one bullet can be shot at a time (you must reload the gun everytime you want to shoot).

(2) Not as accurate as a regular .22 Caliber gun (but the gun was not intended for target shooting).

(3) Looking like a pen may cause dangerous situations.


(1) easy to build.

(2) Easy to use.

(3&4) Easy to conceal and discard.

(5) Low cost (almost nothing).


All information contained in this file ‘How To Build a .22’ is for information purposes only. The author takes no responsibility for the action(s) of his readers. The reader in question accepts total responsibility for any consequences

Comments (13)

  • mike

    Just to correct an oversight. Don’t forget these are illegal and I’m not responsible for anything you do

    But …

    .22 cal Ammo Like .22LR .22 Short etc are all Rimfire cartridges. The Bolt (Metal bar) needs to hit the rim of the bullet shell not the center. Centerfire Round are much too powerful and will explode if you build a pen gun with one and u will likely loose fingers ur hand or ur life.

  • Wolfsbane

    I agree with Mike. I don’t think this will work. A .22 is a rimfire cartridge. The firing pin must strike the rim in order to ignite the primer.

    In addition, when is the last time you’ve seen a ball point pen constructed from metal? The 1980s? They’re all plastic now unless you buy one that’s quite expensive.

  • Billyyyy

    Thanks for repeating what Mike said Wolfsbane

  • AF Lee

    I agree with Wolf and Mike. This how-to is written for high school aged kids daydreaming about doing stupid stuff. At the very least it wouldn’t work, and at the very most is extremely dangerous. I couldn’t help but laugh out loud at the part about making lands and grooves with a screw. It’s beyond idiotic. Whoever makes this deserves whatever blows up in their face.

  • sj

    what are the diametres of all the tubes? And what sort of metal pen picture please of the pen and the finished zip gun.


  • sj

    and also the name of the pen.
    Can I use it as a sort of dart gun, I don’t like bullets you know, and I don’t use it but judt wants to make one for fun.

  • sj

    and I also wanna know the range of it.


    Hello. Merci de me contacter pour une demande sp

  • 네임

    how to build .22 bullet?

  • Zaku

    im holding a metal pen in my hand right now that i got for free so in fact you r quite dumb

  • Bryan

    Rifling lands in a pen? Using a screw? You cannot be serious.

    This sort of statement shows a pretty big lack of understanding of the subject, and makes me say without a doubt that you should never follow these instructions. Find other instructions online which are by someone that doesn’t believe you can properly rifle a ballpoint pen with a screw, it may save you a few fingers.

  • Josh

    Have you ever even seen/held a firearm? Other than on tv? If a person doesn’t realize something as basic as the fact that a .22 is a rimfire, they shouldn’t be giving out instruction on how to build. I only mention this because others did, that lack of knowledge about firing pin placement might save some injury from your crack pot design. this is the most horrible improvised weapons instruction I have ever seen, I hope this was written by someone that doesn’t have access to bullets or pointed scissors.

  • sam

    safe to shoot.. my ass

Leave a Comment

Scroll to top