Introduction: Knex Pistol, With a NEW! Firing Mechanism, a Hammer

Picture of Knex Pistol, With a NEW! Firing Mechanism, a Hammer

This is my new knex pistol it uses a new, pretty efficient firing mechanism. I guess you call it a hammer you pull the hammer back which rotates back, it locks into place in four different distance and when your ready to fire, pull the trigger. With only two rubberbands i was able to fire it 30+ ft on a stright angle with good power. (Not aiming 45 degrees up in the sky) its a single shot so you have to keep reloading :( It has a true trigger as well. It uses very few pieces (about 100 and something).

Step 1: The Hammer

Picture of The Hammer

Pretty simple step

Step 2: Trigger

Picture of Trigger

Another easy step

Step 3: Handle

Picture of Handle

Pic 1 and 2 are pictures of the finished handle

Step 4: Trigger Guard

Picture of Trigger Guard

Easy step again

Step 5: Barrel

Picture of Barrel

On the last pic the view from the back of the barrel there is decapitated grey connector, the one in the middle of the other two that are slightly higher. Sorry it's blurry.

The grey connectors on either side of the barrel hanging off, (free-moving), they should have green/black connectors or pegs in them.

Step 6: Body

Picture of Body

Disreguard the grey connectors attached to the body as they are already connected to the barrel.

The hammer is also attached.

Step 7: Putting It All Together

Picture of Putting It All Together

Sorry i have no pics for the assembly of the gun but it is pretty basic i will hopefully post some soon. For now i will provide you with an easy summary of how to do it. The hammer has already been shown connected to the body. To attach the trigger you connect to the bottom yellow/gold connector of the body seen in the pic of the entire gun. Attatch the handle to the White/black connector with the two short white/black rods on the handle in the back of the gun attach the barrel and trigger guard to the appropriate spots, it'll come easy. and your done. P\M me if you have any problems.

Step 8: Finishing, Loading and Rubber Bands

you may want to add grey connectors on each blue rod sticking out preferably on the side your hand wont be on (righty, left side of gun and vice versa)

When you add the bands double loop it so the band has more tension and rest it under the front sight by the orange connector and stretch it back to the back of the hammer where the groove of the yellow connector with the geen/black peg meets the red/darkgrey connector. Also insert a rubberband behind the trigger to allow the trigger to reset itself and catch the hammer as you pull it back it will also ensure the hammer does not fly foward while you are trying to load.

To load insert a rod of any size you wish, if it is a smaller rod blue, white, or green, even yellow insert it from the back and if it is longer you can load it through the front, all after the gun has been cocked. the rod should rest on the edge of the decapitated grey connector so that it is as far back as possible but still inside the barrel. You'll understand once you find out where the bullet needs to be for it to shoot. Again, sorry for no pics and for some reason i cannot insert the yellow message boxes, the reason for these long descriptions. Just P/M me if you have problems.


supaboss (author)2015-08-08

How do you cock the gun and where do you put the rubber bands?

supaboss (author)2015-08-08

BOSSLIKEDAT99 (author)2015-04-02

I made a hammer action derringer 2 years ago but never posted an instructable. Now I made it into a break action derringer with a hammer.

Maxie-Moose17 (author)2015-02-10

where do the elastic bands attach on the trigger? Good gun otherwise 10/10

elwoodknight (author)2012-08-27

cool gun 5 star al the way (do you think you can look at my gun and give me a few pointers) its a 25 round bolt action rifle with grip and grenade launcher but the triger is priety week heres a link

Element Force (author)2012-06-05

Do you need that orange connector

bballkidx (author)Element Force2012-06-06

no its just for the sights

Element Force (author)bballkidx2012-06-06

ok tanks

skyfaller (author)2011-12-08


Sharir1701 (author)skyfaller2011-12-09

the earliest one i've seen was posted in the beginning of 2007.

skyfaller (author)Sharir17012012-01-03

Link then?

Sharir1701 (author)skyfaller2012-01-04

i'm too lazy. just search for knex wasp in ki. i think ooda made it.

skyfaller (author)Sharir17012012-01-26

Way later.

kii-1 (author)2011-09-18

nice, i made it as my first gun and i love it ! * * * * *

spankabajanka (author)2011-08-15


crazykiddo (author)2011-07-21

very good gun10.00 but it really needs a better handle and a bullet lock mybe im gunna try to modded just give me ur permisson to post the mod or im just gunna give u alot of creadit

bballkidx (author)crazykiddo2011-07-21

u got my permission but i also expect "alot of creadit" thanks bra

crazykiddo (author)bballkidx2011-07-22

how bout 99.999999999999% of creadit

crazykiddo (author)crazykiddo2011-07-23

modds handle ,barrel ,the hammer? idk ,i might have a revoling barrel

crazykiddo (author)crazykiddo2011-07-23

done comfy handle new barrel and new trigger guard

crazykiddo (author)crazykiddo2011-07-24
click or copy the gun

d4rkde4ths (author)2009-04-18

im having trouble assembling it plz post it soon

ponddust1 (author)d4rkde4ths2009-06-25

is the hamer suposed to go in the hole

kray953 (author)ponddust12009-10-19

 you have to cut one of ur grey pices so it can hit the bullet or u can use a ball joint recever for that in sted of cutting the part

ponddust1 (author)kray9532010-08-31


crazykiddo (author)ponddust12011-07-23

or u dont use that pice

Inventor X (author)2011-07-19

5.0, very nice gun, functions generally great.

CODKING (author)2011-06-29

it needs a side view

Keano10 (author)2011-06-25

coool i'm gonna make it!

KNEX GUN BIULDER (author)2011-06-10


knexspert143 (author)2011-06-08

I love the gun and it is powerful I hit my wall from 20 yards.

knexinventer (author)2011-06-03

made your gun and will use it on youtube

daredevil499 (author)2011-04-18

please post pictures

hazza the gun (author)2011-03-25

in what way is this break action? i would call it breech-loaded

AwesomePossum50 (author)2011-03-22

That video was removed. =(

fooey285 (author)2011-02-08

Just built the pistol. Looks good, but to me it has no power meaning that the ammo drops as soon as it leaves the barrel. I rate it a 7/10.

An Villain (author)2011-02-02

I LOVE this gun, How did you come up with it? I was really surprised at the energy the hammer exerted on the ammunition, Your claims of 30-40 FT flat with this gun are completely true. 5*

192seeker (author)2011-01-23

Is the trigger guard even necessary for it to work properly, or just safety feature?..

instruct39 (author)2010-02-27

This gun is sick nasty! although i rated it a 4 because of a couple things: the handle is super uncomfortable, its shape is big and awkward, and the sights stink. other than that i think it is a great hammer action gun

CuddlesMcT (author)instruct392010-06-10

You do know all those can be swapped to your liking? LOL the sights and handle suck, so switch them? ><

instruct39 (author)CuddlesMcT2011-01-01

yeah i know, im just too lazy to mod anything. LOL!!

Sketch98 (author)instruct392011-01-01

why do sights matter? it's a pistol no one ever aims a pistol using sights

instruct39 (author)Sketch982011-01-01

haha, i get that from alot of people, and i like to have sights on any gun so i can see how accurate the gun is.

zypher3.14 (author)2010-11-16

what's that in the top-left corner?

~Aeronous~ (author)2010-08-07

Add a turret.

The Jamalam (author)~Aeronous~2010-09-04

Check your dates.

~Aeronous~ (author)The Jamalam2010-09-04

You check your dates.

The Jamalam (author)~Aeronous~2010-09-05

Yes, I do check my dates. Your point?

~Aeronous~ (author)The Jamalam2010-09-05

No point. Just check you dates next time.

The Jamalam (author)~Aeronous~2010-09-05

I did, hence my comment.

About This Instructable




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