Introduction: MP5K

Picture of MP5K

Here is my knex MP5K . It's my entry for the MW2 contest. AND IT WON!
Its a good replica with these features:

*Shoots Dark Gray Connectors
*Angled Removable mags (normal or high cap)
*Good sights
*Optional upper receiver with rails (Not Posted - Just replace 3rd and 5th layers with whites and yellows)
*Good for a replica or side arm


Step 1: Build a Whole Lot of Stuff

Picture of Build a Whole Lot of Stuff

Build a whole lot of stuff

Step 2: Assemble the Gun

Picture of Assemble the Gun

Assemble the Gun

Step 3: Magazines

Picture of Magazines

Normal on left, High Cap on right!

Step 4: Loading the Mag Into the Gun Properly

Picture of Loading the Mag Into the Gun Properly

Insert the MAGAZINE (not clip) into the gun correctly for it to shoot right!

Step 5: Mods

Picture of Mods

Here are mods made to the gun that have been made by me, or you guys.
Mag release, with a few other attachments. Made by: osi

Step 6: Your Guns

Picture of Your Guns

Here are some of your versions of this gun!
Pic 1 - John Copper's version
Pic 2 - Ymerej88's version
Pic 3 - knex gun builder's version
Pic 4 - osi's version. He added a mag release that works!
Pic 5 - Dr MonkeyMan's version


Dr MonkeyMan (author)2013-06-26

Here is a photo of my modifications.

Sorry it took a while, but it's up there now!

Ok thx!XD

Dr MonkeyMan (author)2013-06-23

Hey shadowninja im new and i made some mods for your gun and i was wondering if i could post them

I'll need you to send some pictures and info or something but sure!

2000smartkid (author)2012-12-01

(this comment is only for people who want to accept this challenge) If you can, I want to see if anyone can make a knex version of the Nerf Vortex Nitron. I will leave some pictures of it in my profile. If you want to try this, comment below this comment. If you think you have succeeded after making it, comment below the acception of the challenge.

2000smartkid (author)2012-10-25

Hey, I modded both mags a little bit, because for some reason, the ram would knock the mag out of the gun. So I added some parts and cut some parts to fix the problem. I will try to upload some pics that show what I did. :)

Interesting. Yeah that would be helpful I'd like to see what went wrong.

Actually, I just made it again (because I had taken it apart) and I found out why the ram would knock the mag out of the gun. It was because the mag wasn't in the gun right. So I put it in the right way, and the ram doesn't knock it out.

james4 (author)2011-07-09

5 female ball joint connecters.............. THIS IS MADNESS

2000smartkid (author)james42012-10-21

not for me, I have 9 female ball joints

shadowninja31 (author)james42011-07-09


eLeMeNtLtd. (author)2012-08-18

Shadowninja31, may i use the mag removal system for my gun? plz reply as fast as possible.

Sure, but credit would be nice.

thebomb745 (author)2012-08-11

how many pieces of each does this take?

shadowninja31 (author)thebomb7452012-08-11

I don't know off the top of my head sorry.

mr.knexer (author)2012-08-01

is the mag removeable?

shadowninja31 (author)mr.knexer2012-08-11


rlaxrlax (author)2012-05-05

just some advice on the rubber band try using small ones for the trigger and size 64s for the firing pin

rmeyssen (author)2011-08-28

nice gun realy like the mag

shadowninja31 (author)rmeyssen2011-08-29


didexo (author)2011-08-20

I like the design but the mag is hard to put in and messes up the firing

robbinrook (author)2011-07-16

What are femail joint connector or whatevah...

shadowninja31 (author)robbinrook2011-07-16

They kinda look like dark gray connectors with the ends cut off and they are black.

robbinrook (author)shadowninja312011-07-16

what kind of 'things do u shoot with? which partz?

shadowninja31 (author)robbinrook2011-07-19

Dark gray connectors

robbinrook (author)shadowninja312011-08-02

Hi (again) uuhm. If i load the mag with the dark grey connectors an i let it go then everything springs out. And u cant just insert the mag full loaded, is this normal? And if its not, how can u solve the problem?

shadowninja31 (author)robbinrook2011-08-02

I had to hold back the mag pusher, but you could insert a green rod in the white connectors hole to block the pusher....

shieldsam (author)2011-07-31


shadowninja31 (author)shieldsam2011-08-01


CODKING (author)2011-07-02

ok i fixed the shooting prob all i had to do i make the high cap mag and replace the parts where it bent w/ orange ladder conectors so it actually looks like the extended mag on black ops now

shadowninja31 (author)CODKING2011-07-09


CODKING (author)shadowninja312011-07-10

i dont know i just found it to work better

shadowninja31 (author)2011-07-09


CODKING (author)2011-06-29

wait are the wheel things on pic 16 needed or r they just for looks

shadowninja31 (author)CODKING2011-06-30

Optional. For comfort.

CODKING (author)shadowninja312011-07-01

k thnx

gassybeans (author)2011-06-03

in this step u pretty much build the whole gun

shadowninja31 (author)gassybeans2011-06-03

Well that's how things go.....

gassybeans (author)shadowninja312011-06-05

yep. i couldnt build the mag cause iran out of Y connectors

gassybeans (author)gassybeans2011-06-18

nevermind i bought some on

shadowninja31 (author)gassybeans2011-06-18


shadowninja31 (author)gassybeans2011-06-06

Oh okay. Hmm... Not sure how to fix that....

gassybeans (author)shadowninja312011-06-06

hey, if i build your alien sniper thingy from the picture can i make an instructable of it?

shadowninja31 (author)gassybeans2011-06-06

Sure! It's not good though.

gassybeans (author)shadowninja312011-06-08

thanks! ill get building

gassybeans (author)gassybeans2011-06-18


CODKING (author)2011-06-14

im so gonna build it

CODKING (author)CODKING2011-06-17

i built its so realistic looking, well knex style but iv had trouble with the mag and firing but its no suprise it won

shadowninja31 (author)CODKING2011-06-18

Thanks! I'm sorry you have problems.

About This Instructable




Bio: I like knexing, if you haven't noticed. Check out my photobucket account!
More by shadowninja31:KClSBM & ElementKnex AKS-74U
Add instructable to: