K'NEX Remington R5 RGP (Build)




Posted in PlayKnex

Introduction: K'NEX Remington R5 RGP (Build)

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

Derived from the classic AR15, the Remington Defense R5 RGP (Remington Gas Piston) brings a new outlook on the outdated M4 design. With it's video game debut in Call of Duty Ghosts, the Remington R5 is more like a fully automatic sniper rifle than anything else, with its high range and great accuracy.

This K'NEX R5 is true to form with its one-to-one frame, 5.56 magazine width, and great iron sights, this R5 would be a great indoor K'NEX war weapon. Featuring a 15+ round magazine, a pin-guide system, and a modular frame, this is one fun gun to mess around with!


  • Pin guide
  • 45 ft. + range
  • Great iron sights
  • Long sight radius
  • Great pin-pull length
  • Good magazine capacity
  • 1/1 scale body
  • Sturdy chasis
  • Comfortable grip

Lets build it!

Step 1: Left Panel

Pretty self explanatory, check the images for image notes.

Step 2: Stock Internals

Now we'll be working on the stock, go crazy.

Step 3: Main Internals

Here are the internal. If you have any questions, just let me know.

Step 4: The Grip

This is one area where I suggest you do what you want, the grip is only as comfortable as you make it. I made it for looks (as usual) so go crazy.

Step 5: The Last of the Internals and the Right Panel

Here is where you'll be finishing the main body... Pretty simple.

Step 6: The Magazine

The magazine is pretty easy, build the internals around the round you want to shoot.

Step 7: Adding Rubber Bands and Extras

Last step. Follow the pics and/or finish the gun how you want.

Thanks for building my R5 RGP! Let me know how it does for you guys, and as always, if you have any questions, let me know! Thanks guys, you are awesome!

-The Red Book of Westmarch



    • Make it Move Contest

      Make it Move Contest
    • Casting Contest

      Casting Contest
    • Flowers Challenge

      Flowers Challenge

    We have a be nice policy.
    Please be positive and constructive.


    5 Questions

    Can you show more pictures of the main internals?

    Does anyone know the parts count for this gun?


    never mind. I fixed the jamming and shoots much better

    Great gun, Red! One of your best rifles, and the pin guide is a great addition.

    1 reply

    Cool! I built this and looks amazing! Though i didnt add the extra layers

    I was going to build it but you did not say the size i should cut the rod's

    I am gonna try to build it, but i want to mod it for a mag-release button

    I have the pieces but this gun uses cut pieces

    Is there any chance you could make a parts list for this?

    Red, I love your guns, but this is in a class of its own! Amazing, I don't understand how you can build so many guns at such good quality.

    I would also like to know if you use a simple picture reference when building guns, or if you get exact measurments.

    2 replies

    Thanks man, glad you like it!

    When it comes to dimensions, it just depends. If the dimensions exist, I typically go with the length and that's it. If the dimensions don't exist, like, for example, a weapon from Destiny or Borderlands, I just guestimate.

    Yeah, I was kinda wondering how you got the guns so accurate, thanks!

    I haven't really been on here in a while, but this has to be one of the more quality builds I've seen recently. Good work! =D

    2 replies

    I've had lots and lots of homework. So I haven't been able to really break out the Knex for a long while. I'm hoping I can eventually do so however. This winter break I shouldn't have that much homework so I may be able to build something. (Let's hope) :)

    Hey i built the gun and u the stock is a bit small.and u cant really use it as a check rest :)