Introduction: Lever Action Rubberband Gun - Instructions

Picture of Lever Action Rubberband Gun - Instructions


These are the instructions for the lever action RBG I posted a little while ago.
For more photos of the gun, you can visit the original post.

General information:
- Lever / hammer mechanism
- Holds four to five rubberbands
- Stock can be customized, as it doesn't house a single part of the mech
- Comfortable

Lets move on to the instructions, shall we?

Step 1: Part List

Picture of Part List

This is the part list for the whole gun.

The steps have lists of the pieces needed for each individual parts of the gun.

White connectors, 8 slot - 21
Blue 3d connector, 7 slot - 6
Yellow connectors, 5 slot - 112
Green connectors, 4 slot - 28
Red connectors, 3 slot - 27
Orange connectors, 2 slot - 18
Light grey connector, 2 slot - 15
Dark grey connector, 1 slot - 11

Green rods - 255
White rods - 97
Blue rods - 21
Red rods - 3

Y clip - 5
Tan clip - 3
Blue clip - 1
Full hinge - 2
Female ball joint - 2
Bendy rod, yellow length - 1
Blue spacers - 8
Small black wheels - 6
Small rubberbands - 3 (trigger and hammer only)

Broken parts:
Rod, 3 units wide - 4 (two are optional: the lowest one in the lever, and the one in the stock.)

Step 2: Stock

Picture of Stock

Parts needed for the stock:

White connector, 8 slot - 2
Yellow connector, 5 slot - 49
Green connector, 4 slot - 12
Red connector, 3 slot - 5
Light grey connector, 2 slot - 3
Orange connector, 2 slot - 5
Dark grey connector, 1 slot - 3

Green rod - 94
White rod - 31
Blue rod - 10

Y clip - 1
Full hinge - 2
Blue clip - 1
Broken rod, 3 units wide - 1(OPTIONAL)

You can leave out the broken rod, and the two green connector that attach to it. The sloped part will be a bit more "squishy", but it doesn't affect the performance of the gun.

Step 3: Handle

Picture of Handle

Parts needed for the handle:

Yellow connector, 5 slot - 6
Green connector, 4 slot - 2
Red connector, 3 slot - 5
Light grey connector, 2 slot - 2
Dark grey connector, 1 slot - 3

Green rods - 18
White rods - 10
Flexible rod, yellow length - 1

Tan clips - 2
Ball joint, female - 2
Small black wheels - 6

The small wheels are optional, but drastically improve how comfortable the handle feels. Can be replaced by orange connectors with y clips on both ends, just wrap a rubberband around the handle to keep those on.

Step 4: Body

Picture of Body

Important note:
The blue spacers in the hammer should go on the green rod, not the broken rod. Otherwise, the hammer will be very hard to move. (see last photo)

Parts needed for the body:

White connector, 8 slot - 19
Blue 3d connector, 7 slot - 6
Yellow connector, 5 slot - 52 (Optional: replace five of them for the metallic variant, for a grey barrel)
Green connector, 4 slot - 7
Red connector, 3 slot - 16 (Optional: replace three of them for the metallic variat, for a grey barrel)
Light grey connector, 2 slot - 4
Orange connector, 2 slot - 11
Dark grey connector, 1 slot - 5

Green rods - 128
White rods - 44
Blue rods - 11
Red rods - 3

Y clip - 3
Blue spacer - 6

Broken rod, 3 units wide - 3 (One is optional, the lowest one in the lever. Replace it with a normal white rod)

Step 5: Attaching the Individual Parts

Picture of Attaching the Individual Parts

It's the easiest when you detach all the rods connecting the stock with the body, and re-attaching them one by one. Almost done!

Step 6: Rubberbands

Picture of Rubberbands

Grab a couple of rubberbands.
One on the trigger
One or two on the hammer
The gun will the performing the best when you have three to four rubberbands on the ratchet. Otherwise, the lever and trigger will be hard to move.

Step 7: Quick Trigger Fix

Picture of Quick Trigger Fix

So, as mentioned in the comments, the white rod on the trigger can sometimes break off.
This is a quick, little fix that prevents the trigger from going back too far. The trigger pull will be shorter, but a lot easier.

This has worked flawlessly for me, so hopefully it'll be the same for you!

Step 8: Finished!

Picture of Finished!

If you have followed all the photos, you should now have a functioning lever action rubberband gun on your own!
Tell me what you think in the comments below, and if you build it, be sure to add a photo of it!

Photo 2: The Knex Inventor's version

Should you need help with a certain step, let me know, and I'll help you out.


JonnyBGood (author)2016-08-09

Those lines! Very smooth.

dr. richtofen (author)JonnyBGood2016-10-29

It's one sexy piece of plastic, innit?

The Knex Inventor made it! (author)2016-06-09

I made this yesterday in a couple of hours, and finally found the time today to take some pictures. Great gun! The only two problems that I had were:

a. The white rod on the trigger will break off if you pull it when rubber bands are loaded

b. The lever will break if you push it too far

I would very much like to find a solution to problem a, so if anyone has an idea about it, please let me know. The second problem is really not a problem, since you will know when you have pushed the lever far enough. I just pushed it farther to test its limit.

Other than that, this is a very nice gun, both in looks and performance, and I would highly recommend building it if you have the pieces. Thanks dr. richtofen!

I'll have to check what causes the trigger problem, as I have that as well. The old one in the slideshow worked without problems, but for some reason, this one doesn't.
It can maybe be solved by blocking the trigger earlier, making the pull shorter. Something I'll do in the weekend.

About the lever, yeah, eventually it just... stops. If you want to, you can maybe shorten the arms inside the gun, so you have to push it further. Not sure of that's an actual solution, though.

Anyway, I'm glad you like the gun! I'll have a look at the trigger problem, and update the ible if I find a fix.

Okay. Great! I will keep mine together over the weekend in case you find a solution.

As I said before, the lever really isn't a problem, I was just testing it when I pushed it too far.

So, I fixed the trigger. It's actually a very easy fix, but it now works flawlessly with five rubberbands loaded. Photos and another quick shooting video should be up in half an hour or so.

Great! Thanks for looking into it. I will fix it when the photos come out, and watch the video. Could you please let me know when the pictures are up? Also, what size of rubber band do you shoot from it? #32?

They should be up now.
I'm actually not sure about the size. Based on photos from google, they're similar in size, but thinner than #32 bands.

Great! I will fix it, and see if it works better.

Okay, so I put the other piece on, and the white rod still breaks off. Maybe hot-gluing the orange connecter and white rod together would work, but I don't really want to glue my pieces. Any ideas what I am doing wrong? Here are
some internal pictures:

Don't glue your pieces together. If anything, use some tape or something, which can simply be removed.

I honestly don't know what's causing the rod to break off. Everything looks like it should in the photos. Maybe it is a difference in tension between your rubberbands and mine, maybe bad luck. I really don't know, sorry :/

Yeah, I tried switching the orange connector and white rod on the trigger, which didn't help, so I will try taping it and let you know how it goes. Thanks anyways!

Taping the trigger worked! I tightly wrapped the white rod and orange connector together with electrical tape, and it is a lot more secure now, and can handle multiple rubber bands. Thanks for the idea! Here is an internal picture:

Glad you found a solution. Taping might not be optimal, but it's a helluva lot better than gluing the pieces together.

I hope you have some fun with this gun, despite the problems with the trigger.

Thanks! Yeah, despite the trigger problems, this is my favorite RBG that I have ever built.

BTW, if you want to add any of my photos to this Instructable, feel free to.

Also, I forgot to say that the trigger would break off if I pulled it when it had over one rubber band loaded. It still worked fine with one.

Sorry I didn't put this in my original comment, but I didn't want to retype the whole thing and upload all the pictures all over again.

CorgiCritter (author)2016-06-08

Pretty cool! I've never been able to build a multi shot knex RBG that worked right, I may have to try again.


Linkin_J_Knex (author)2016-06-05

Looks like a great build! Not usually a fan of rbgs but I may have to build this :)


I personally like them, as you can do some interesting stuff with them. I'm all out of larger rubberbands, so if I want to build something that shoots... at least something, these provide a nice alternative.

If you end up building this, post a photo as well. I'll add it to the ible~

Okay cool :) i have been pretty inactive with k'nex recently due to me being really busy! I doubt i will build it anytime soon but I might do eventually. I ought to experiment with rbg's, you can make some pretty interesting mechs as they are simpler. Also i won't get told off for making more guns hopefully XD

No worries lad, take your time. I've been less active as well due to work, other hobbies ect.

The Knex Inventor (author)2016-06-08

Awesome gun! I think that K'NEX RBG's are largely underrated, partially because there are so many of them that are dull and un-innovative, and because most of them are so simple and usually do not shoot as far as guns that shoot K'NEX pieces. In truth, you can do some pretty neat things with them. I personally like them as well, but that's just my opinion.

I will have to build this sometime, maybe today. I will post pictures when I have finished.

BTW, is the lever action feature on this gun a working mechanism, or just for looks/replication?


Yeah, there are definitely some interesting things you can do with RBG's.
Looking forward to see your version~

As for the lever, it does work. It doesn't directly connect to the hammer, but it pushes it back. I hope I can do a video on it soon-ish, but for now, here's a quick one that shows it working.

Okay. I get it now. Great! Thanks for the video!

The Knex Inventor (author)2016-06-08

It's great to see you posting something new! I look forward to building it!

Kona-chan (author)2016-06-06


dr. richtofen (author)Kona-chan2016-06-07

Mio best K-on though.

About This Instructable




Bio: Hey there. I won't add too much info here, as it'll show up as one big paragraph.
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