K'NEX RLSW V.1 (Red's Light Support Weapon) (Build)

About: K'NEX gun builder here at Instructables. More or less retired from the community, but I still pop in now and again.

This is my second entry to the "Toy Rods and Connecters Contest." It is my RLSW (Red's Light Support Weapon). I designed this gun to be perfectly suited for K'NEX wars. It works both as a mag gun and as a muzzle loaded gun as it is great for hallways (in indoor K'NEX wars), as well as long rage (outdoor) K'NEX wars. It is, overall, a good mix of speed and power, and I would feel very confident in taking this gun to a K'NEX war.

Some features of the gun are:
- Great range 60 - 70 ft.
- Great looks (IMO)
- Attachment rails
- Very easy to hold and use
- Very comfortable
- Nice pin-pull
- 12-ish round magazine
- Simple sights

Now, lets move on to the first step shall we?

Step 1: Main Body #1

In this step you will be doing the majority of the work, as you will be building both the right side of the gun and most of the internals. If you need help, ask for some.

Step 2: Handle / Pistol Grip

In this step you will be building the handle and the comfort bar. I was too lazy to take the whole thing apart, so I just gave some general pics. It is relatively strait forward and simple, but if you need help, I am always willing. I truly suggest that you should make your own handle, as this one was created to my wants. Use the ingenuity that God gave you and make your own version.

Step 3: More Internals

In this step you will be finishing off the insides of the gun.

Step 4: Main Body #2

In this step you will be slapping on the left side of the gun and all the extras (including the tactical rails). Keep the image notes in mind as you build.

Step 5: Magazine

In this step you will be building the magazine. As always, I was too lazy to take it all apart, but it is VERY easy to see how it is built. Just build it. If you want more bullets to fit in this magazine, all you have to do is make the mag longer. And yes, you do need those broken rods.

Step 6: Banding and Finishing

You will be doing exactly as the title says you will be doing.

Step 7: Extras!

Here are just some extra pics for you.

2 People Made This Project!


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55 Discussions


Question 6 months ago

Are the magazines pre-loadable? I'm building it if they are!

1 answer

In step 1 pic 1, is that red connector at the muzzle behind or broken? And in step 1 pic 1 too, is that a flex blue rod? And if you have time, can you make a magazine/mod for receiver that lets the mag use 1 or no broken pieces? And let the mag stick in, not just by friction and tape, but by ball-and-joint connectors or something. I would be ever so thankful, and I'd tell all my knexing friends (0)! Favorited.

1 reply

Also, can you help me with the handle in step 2? As in, take top, bottom, and front pictures or even take it apart. Finally, where is the ram? I didn't even see a picture of it.


5 years ago on Introduction

nice gun but i really dun like the firing mech
it was also used in the your acr likely weapon(forgot the name/ can't spell it)
and that didn't work at all, the pin just kept bending up or sideways, what did i do wrong excualy?
overal a nice gun

1 reply

5 years ago on Introduction

damn, that's a nice gun bro (8
if i have time, more knex,(HINGERS >.<) and sum bro bendys(gonna order parts around my b-day 'nd stuff) then i'll look if i can build it c:

1 reply