Knex Sidearm RSN-33




this is my sidearm
I made it to complement other guns i will build in the future
i plan to make at least five instructables this summer (please dont hold me to this cause things change)

low peice count
pretty good range for a sidearm (45ft with two brand new rubberbands)

i dont really like how it looks
not super sturdy (but sturdy enough)
long reload time

it has a capacity of 7 grey connectors

Now get to building

Step 1: Handle

this is just your average handle with a little added comfort

1. build two
2. build these
3.add peices from pic 2 to to one of the peices from pic1
4. put the 2nd peice from pic one on
5. build these
6. put them on the side of the hand you hold the gun (ex. if you hold the gun in your right hand put them on the right side) then put a rubberband around them to hold them in place

Step 2: Barrel and Mag

1. build 2
2.put those on one of the peices u just made it
4.clip it together
5. put the reds on at the bottom do it on both sides
there is also tape on the 3rd and 4th snowflake connector to hold the greens in do that on both sides

Step 3: Trigger, Ram, and Mag Push

build one of each thing
pics 1 and 2 are diff veiws of the trigger
3. build it
4. build it
I cut the end notch thing off the grey rod and I glued the yellow to the Grey rod

Step 4: Assembly

pretty easy
1. handle to barrel
3. ram and mag pusher put in (as if u didnt know where they went)

Step 5: Rubberbands

do what you want with what you have but this is how I did it
srry for blurry pics

Step 6: Your Done!!

Hooray!! go shoot some stuff

play at your own risk



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    33 Discussions


    6 years ago on Introduction

    i would love u to kno, this was the first knex gun i EVER built that shot something other than rubber bands ;)


    6 years ago on Step 6

    dude epic gun, just rearange the rubber bands, and use the jumbo ones

    I know what you meen dude i did that once but it broke my little finger :(
    It hurt so bad!
    To all those knexers out there be careful
    What if a piece broke off and hit you in the eye? Ouch

    bomb voyajue

    7 years ago on Introduction

    @ joshadrian that's a lot of o's :P

    it looks awesome but it probably doesn't fire 45 feet because of the friction between the bullets and the barrel slowing down the force and speed of the bullet :3


    imade this gun a few months ago, and now improved it a ton. i added a rib, made the handle super comfy, improved the ramrod so that it doesn`t break nearly as easily, and extended the mag to hold ten bullets.


    8 years ago on Step 6

    i made it and i didn't have rubber bands so i used silly bands. just use the ones you dont like.


    8 years ago on Introduction

    Haha this wastes SO much energy by the fact that the ammo is too small to fit out of the end of the gun... It can get out, but the gun pinches it, making it less accurate and much slower because of friction

    1 reply

    8 years ago on Step 2

    theres tape over the two green rods. (look inside the yellow box, you should see them)


    9 years ago on Introduction

    Awsome gun, nice and accurate and easy to use and not a lot of knex required.


    9 years ago on Introduction

    I wonder if this gun shoots farther then this other gun I found on this different website. The gun recommended parents to be around when using. They also said it was the strongest k'nex gun he could find on the interent. The weird thing is, he said it shoots 40ft. lol. This gun is way better.