Introduction: Knex FN F2000

Picture of Knex FN F2000

Here is my (not so) long awaited bolt action bullpup F2000.

It features a 15 round mag that fires blue length rods.  It also has a chamber port (this is new and not on the slideshow) where yellow rods or sharpened greys and reds can be loaded and fired.

As mentioned, it is bolt action and bullpup with a removable mag.  It achieves a good amound of power despite being a true bullpup because the bolt pushes the round around 4 inches forwards out of the mag into a chamber above the handle.

I'm afraid for the best reliability and performance the weapon has to use lengths of grey rod cut to the length of blue rods to stop interlocking in the mag, but this is only because of the power or the mag pusher.  I'm sure one of you can easily modify the mag to use a weaker external pusher and then the gun can fires blue rods.  I just happened to have loads of bent up grey rods that I had to forcibly remove from my NAR that weren't much good for anything else, so I used then for optimum performance.

Now if people want me to post my version of the mag which has to fire cut rods I will do it, but I don't see the point if no one wants to use cut pieces.  I'll try making a new external pusher mag, but if you do want to use mine, tell me and I'll post it.

Step 1: Main Bodywork

Picture of Main Bodywork

This step is a colossal pain, but when you have it done, the rest is nice and easy, so just get through it.

1.  Build this panel.
2.  Add these rods; don't miss any, there should be 49 in total.
3.  Now make these inner pieces.
4.  Add them to the other panel; it may be easier to slightly dismantle it in places, but make sure they go back as they were.
5.  Now make this, it really is as simple as it looks.
6.  Add it here.  The white rod at the back goes into the hole in the red connector.
7.  Get three grey connectors and put them here.  Note the tan connector.
8.  Make these pieces for the mag release catch.
9.  Add them here; make sure it stays in this position from now on.
10.  Get these.
11.  Put them here. Sorry about the flash.
12.  Make the inner barrel.
13.  And this piece;  the tan connector must be sanded down to just below the peg so the peg is all gone.  You probably could leave the tan connector out.  See the image notes.
14.  Get this.  
15.  This is where they go in the body. 
16.  A close up of the ramp connection.  You can see here why the orange has to be sanded.
17.  Make this little piece.
18.  Put it on the front here.
19.  Get these.
20.  Put them on here; 2 on each rod.
21.  Make this piece.
22.  Put it here in the stock.
23.  Make the trigger block; it includes the end of a cut rod (like in the Mezak)
24.  Make the bottom of the bolt guide.
25.  Put it (and the trigger) here.  See notes.
26.  Here's a close up of how the trigger goes into the general area.
27.  Make this.
28.  Put it in the back wall of the mag well.
29.  Make this panel.
30.  Add it here.  As before, you may want to dismantle it in places.
31.  Here's a look at the port.  Make sure you get those little panels in the right place.
32.  Important step.  Get a #64 around the red connector in the internals and stretch it forwards on both sides.  This is the bullet lock.
33.  Make this panel.
34.  I DON'T HAVE A PICTURE FOR THIS.  Just add it to sandwich everything you've done in between the two big panels.  Enjoy snapping those 49 blue rods in :D
35.  Make or gather these. 
36.  Put them here.  See image notes.

CONGRATULATIONS!  You're done with the hardest part.


Step 2: Handle and Trigger Guard

Picture of Handle and Trigger Guard

This is a nice easy step for you to enjoy.

1.  Make this panel.
2.  Add these rods.
3.  Put these pieces in.
4.  Put the other side panel on; it's exactly the same as the other side.
5.  Attach it to the main body via the blue connectors at the top and with the white rods at the back.
6.  Put some comfy wheels on it.  I also made a wrist guard to stop the rods digging in.
7.  Follow the picture notes as well from now on, because the photos can be a little confusing.
8.  Make the trigger.
9.  Put it in there.  (yes I do see the innuendo)
10.  Make this.  The tan connector should be a blue stub. but I only have one so I have to modify my tan connectors.
11.  Attach it here.
12.  Make these pieces.
13.  Put it onto the last piece.
14.  Make these panels.
15.  And put them on here; make sure that green rod is still in there.

Well done, you are nearly finished (sort of)

Step 3: The Front

Picture of The Front

Nearly there now!

1.  Make the front of the rail.  It's not tricky.
2.  Attach it to the main body.
3.  Make two of these panels.
4.  Attach them as shown here; one on each side.
5.  This is really unclear.  See the notes.  Add the pieces.
6.  This is the foresight.  Make these pieces.
7.  Attach them as shown.
8.  Put it on the gun.
9.  Make this piece. 
10.  Make this bit too.  It's only 3 yellows, not 5.
11.  Attach the last two bits to the front of the weapon as shown. 
12.  Make these panels.
13.  Attach them just in front of the foresight.
14.  Make the front of the weapon.  Follow the notes if you have problems.
15.  Make this piece.
16.  Attach it to the last piece, and attach where shown.  Attach the hinges at the top of this piece to the yellow connectors at the top of the main body, and attach the bendy bit where shown.

Step 4: Extra Bits

Picture of Extra Bits

Important bits.

1-2.  Make this piece.
3.  Make this piece.
4.  Attach them to the stock.  It's a little complicated, but you'll work it out.
5.  This is the pin and pin guide set up.  Follow the notes.
6.  This is the bolt; there's another view I suggest you look at before you start making it.
7.  Follow the notes.
8.  Unfortunately, you have to cut the very tip off the bolt rod.  Only cut the head bit off.
9. Put the pin and bolt into their holes, and snap the guide pins into the places shown by notes.
10.  Add this little piece for comfort.
11.  This is the rear sight.  It can flip up and down.  Make it.
12.  Put it into the main body just behind the rail.  Add the tan connector facing inwards.
13.  To put the sight down, turn the sight so it is down, then push the tan connector in to lock it.

Step 5: Optic

Picture of Optic

Here's the optic.  Since these pictures I've made it taller to be more realistic.  I may post it later.

1.  Make these pieces.  They are the sight elements and support pieces.
2.  Make the top of the sight.
3.  Make these pieces, they are what will attach the sight to the rail of the weapon.
4.  These are the side panels.  Make them.
5-6.  These pictures show you where to attach steps 1 and 3 together.
7.  Attach the other side panel.
8.  Put the top on.
9.  Put these pieces throught the holes in the bottom of the sight.
10.  This is the sight attached to the rail.

Step 6: Mag

Sooooo nearly there now.  You could actually put some bands on and breech load it.  However, you probably want the mag.  Now if people want me to post my version of the mag which has to use cut rods I will do it, but I don't see the point if no one wants to use cut pieces.  I'll try making a new external pusher mag, but if you do want to use mine, tell me and I'll post it.


The Knex Inventor (author)2016-06-24

Superb gun! I will definitely have to build this sometime. Favorited. :-)

charlie-on-our-6 (author)2012-07-03

this gun looks like a tadpole.

knexguy (author)charlie-on-our-62012-07-03

If you say so...

Sharir1701 (author)2012-06-07

check my S1 out here. i was inspired to make it by this gun.

Inventor X (author)2012-03-23

Piece count or aprx piece count pwitty pweeese!!!!!!

Cory88 (author)2012-02-25

Hey, I just built most of the gun and realized there is no mag. If anyone has a mag for this gun please let me know

Johnhall44 (author)2012-01-29

Making true trigger for this......

Johnhall44 (author)2011-10-12

I dont care if you took it apart
rebuild the mag and post

knexguy (author)Johnhall442011-10-14

Are you joking? This was a year and a half ago.

Johnhall44 (author)knexguy2011-11-27

Use your brain then unless there is nothing in there.......LOL

Johnhall44 (author)2011-10-12

post it

Sharir1701 (author)2011-10-01

please post, i really wanna see it and compare it to my internal pusher removable mag. one question : is this mag based on ironman's mag?

knexguy (author)Sharir17012011-10-07

WAY too late. This was a year and a half ago :/

Inventor X (author)2011-09-25

One quick question, how many green rods does this take ????! !!! Because i might build if I have enough and if I do, im probably rating it 5.

reaverkid (author)2011-07-31

I dont know if i missed it or what but how does the trigger work i built it and i dont see how the trigger connects to the thing that actually stops the ram rod

DreadFire3000 (author)2011-05-29

This is the best k`nex gun I`ve ever seen! It looks amazing and is probably super powerful, but I don`t have enough pieces and probably not the patience to build it. 5/5 stars. Best gun ever!

War Hawk One (author)2011-01-22

K'nexguy I made your FN F2000 but I forgot to take pictures of it when it was finished but now we can start on our project about the Heckler & Koch PSG-1 place a comment on my orangeboard:D

silentassasin21 (author)2010-05-20

There are no pictures of the curved mag

knexguy (author)silentassasin212010-05-23

They will be up soon, but I don't want to add anything to the 'ible before I have debugged the new trigger.

shmi117 (author)knexguy2010-05-23

Yes!!!! Wooo! I got a string trigger working perfectly... Also, I built the mag from one of your slideshow pictures, to the best of my abilities... It clips in, comes out easily and all that. It doesn't work, because I don't have an internal pusher or anything, because I couldn't see the mech.

knexguy (author)shmi1172010-05-24

Pictures?  The true trigger isn't really working out very well.  I have one more idea to try, but I may have to stick with the string. 

As for the mag, it uses a variation on Ironman69's bendy rod pusher.  I'll post the mag instructions to this 'ible by Wednesday.  I would do it sooner, but I have exams.

shmi117 (author)knexguy2010-05-26

Ok, well, I took pictures. Sorry I couldn't respond sooner, anyways, Ill wait for your mag. Also, here are some pics...

tytiger33 (author)shmi1172010-12-20

it has 2 pieces at the top that you are missing.

knexguy (author)shmi1172010-05-28

Nice!  Does it work OK for you?  I used a ball joint to y connector at the front of the mag, but the bendy rods may be better!

Faved, 5*, and i want to build. But do you know how many yellow Connectors there are on the F2000?

Are you ever going to post pictures of the string connecting to the trigger? You said you would do it asap on May 20th but the pictures are still not up. Seriously when are you going to post those pictures?!

Lol, exams are LONG GONE! Can you post pics of your mag? I think Ill start building a SPAS-12 shotgun out of knex.

I haven't built it yet

Hey Shmi, knexguy told me that you still have the FN built and that you got the string trigger working perfectly. But knexguy also has his FN destroyed. So, I was wondering if you would post a pic or more of the string trigger. Could you please post some pics I'm dieing to get it to work. Because it took such a long time to build.



tom tom go (author)2010-11-13

very cool gun! I also startet to build your gun

RMConstruction (author)2010-09-28

*Sigh* No mag? Gosh...

knexguy (author)RMConstruction2010-10-09

I used the same mag on my ACR, which I am posting instructions for. However, the 'ible is taking time. If you want the mag, wait until that is posted and get it from there.

Dirtyboyy (author)2010-08-25

i like this gun !! he's big .. and i love big rifle's

knexguy (author)Dirtyboyy2010-08-26

Thanks! I built the mech from this into an ACR body, and pictures of that should be up in a few hours, so look out for that!

Dirtyboyy (author)2010-08-25

5* btw

chandler10s (author)2010-08-09

I am sure this is too late but I want to build this gun and won't build it If there isn't any mag instructions. I will rate everything 5 stars and I like all your work.

knexguy (author)chandler10s2010-08-15

Thanks, but I broke mine up a long time ago.

KnexMaster7000 (author)2010-05-25

 please hurry with the mag.. im waiting for you to post it before i build this.

knexguy (author)KnexMaster70002010-05-26

I'm posting it tonight, but you may want to wait because me and MotaBoi are working on something that should be a lot better than this.  Either way, the mag will be up tonight.

Hey, knexguy I don't see how the trigger works, any help?

it's a string trigger unfortunately :(

oh well, i'll still build since it's a great gun. although could you post pics of the string connected to the trigger because I have the perfect thing to use for a string.

I have dismantled my version, but Shmi still has one and got a string trigger working I believe.

knexguy I'm about ready to pull the hairs out of my head because shmi is not replying. could you at least type a descriptive paragraph on how the trigger works. Pleeeeaaaaaaase I'm about ready to cry.

You have to tie the string to the fake trigger, loop it around a blue rod in the front of the trigger guard, run it up to the rail through the body (make sure it is not blocking the path of the 'bullet') the down the gap of the rail to the block trigger. Tie it on there, and it should work. You will need to play about with it to get the right amount of tension.

Um, I kind of made a true trigger already before you replied to me. The gun is still the same nothing really taken away, but for a few pieces were replaced.The true trigger works like this: I added two things made out of knex and put them on each side of the gun. They're connected to the sliding trigger and to the thing that comes up the back that lets the ram rod shoot. So when they're connected, you can pull the trigger back and it pushes up the thing in the back releasing the ram rod. Like I said it's hard to explain it would be better with a picture but I don't have a camera : ( Also I managed to add on a fake barrel like the real fn has, plus it doesn't block the bullet from when it shoots out. P.S. Congratulations you are my 300th commenter

Shame you don't have a camera, I'd love to see it.

Yes, it does. :( Although My trigger system is rather generic. So It would be easy to build from one pic. You just have to know that it's symmetrical.

Sorry guys. I haven't been replying. Been busy lately, didn't have time to reply. Anyways, I saw that you were getting impatient about me not replying. Fine, lol. Also, I read that you got a true trigger working? Pics? Or no camera. If you guys still want pictures of my mag/trigger, Ill be glad to post. I don't know, I'm thinking of breaking this up and making a Lancer AR, Gnasher Shotgun, or a SPAS-12. I'm not sure. Anyways, if you guys want pics, I can post them while my F2000 is alive.

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