Introduction: K'NEX Remington R5 RGP (Build)

Picture of K'NEX Remington R5 RGP (Build)

Derived from the classic AR15, the Remington Defense R5 RGP (Remington Gas Piston) brings a new outlook on the outdated M4 design.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

Picture of Left Panel

Pretty self explanatory, check the images for image notes.

Step 2: Stock Internals

Picture of Stock Internals

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

Step 3: Main Internals

Picture of Main Internals

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

Step 4: The Grip

Picture of 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

Picture of 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

Picture of The Magazine

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

Step 7: Adding Rubber Bands and Extras

Picture of 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


coolananias101 (author)2017-02-07

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

MonkeyKnexer15 (author)2016-12-26

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

Dr MonkeyMan (author)2015-01-27

In my heart, the M4A1 will never truly be replaced.

I agree

take alook at the c8

BOSSLIKEDAT99 (author)2015-12-26

I have the pieces but this gun uses cut pieces

KnexGuy15 (author)2015-06-22

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

CorgiCritter (author)2015-02-17

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

sandroknexmaster (author)2015-02-17

Looks great!

Miniboom (author)2014-11-21

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.

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!

Raz1r Knex Bull3t (author)2014-11-23

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

Thanks bud, its a start anywho. What have you been up to?

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) :)

knex armoury (author)2014-11-22

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

True, but it is SUPER manuverable!

HisHamA (author)2014-11-24

I've just been scrollin' through Instructables all day, looking for a good gun to build, but I don't know where to start. I'm not new to making k'nex guns, but my tech is really outdated. So, where do you think I should start

Well, you know, I don't know. LOL, I'm not much help here. If you want boss guns, look at Blue Mullet 2 or Sharir1701's guns. Two bosses right there.

Delta-13 (author)2014-11-19

personally, ghosts was the worst game in the CoD games. Imo. Your gun, however, is an absolute beast. I really like the grip and the fore grip: grey rods make a nice effect. To many cut parts for me. =( Especially because of the fact that I don't cut parts.

I've heard the same from lots of people, and while I can't personally say whether it was that bad or not, I haven't heard to many good things about it. A couple friends of mine as well as my cousin actually liked Ghosts...

Thanks man, and while it does have a lot of modified parts, it is still pretty do-able without them, you'd just have to try.

I know that blue rods would be beneficial for the body, but the trigger is gonna be a problem.

Do you like it?

lol, by the way mi gusta is Spanish for I like. :P

LOL, I know, I was just messing with him. =D


myOmy (author)2014-11-14

I love this thing. So clean cut and just wow. I will build this sometime. This is phenomenal. Favorited. Looks real nice man! Great job!

Awesome man, thanks for all the support, and thanks for checking up on me bro, you are pretty much the reason why I posted my latest two guns!

Well thank you, but really you are the inspiration of most of the knex community right now on instructables. I can say this because I have seen it and have been inspired myself. I plan to do at least one replica every time I am motivated to build something. Quite honestly I am not sure that I would be here today without you. Everyone knows your name and respects it. And if I need to give you a nudge to build/post something I'll do it. Or if you just wanna talk I'll be there. Me and most of the community appreciate you. And I'll probably build this next weekend.

Thanks awesome man, and I'm glad you think so! I put a lot of time into 'ibles back in the day, and I'd hate to see the community die... I just lack the time nowadays, and I almost lack the effort, I'm just so busy and so tired all of the time... Thanks again bro, and if you take any advice, start with a really simple gun, not the coolest gun you can think off. Something like a G11, or maybe just heavily improve an older replica...?

Oh my god. Do you know who I am? Two references in your previous comment make me think that you do. When you said thanks awesome man and when you suggested I could heavily improve an older replica. It drives me crazy knowing I am living a lie here on instructables. I have another instructables account. I am TheAwesomestDude. Crazy right? God I'm so immature. You can check the bios of both accounts and they point to eachother. I also have it on my Google+ account. I am Jordan Ritter and have commented on your MSMC I believe. So much of the paragraph above I agree with. I don't want to see the community die. I also lack time and am always tired. I think we have what is known as the teenager contagion. XD Too much to do, so little time, and never get enough sleep. I think I might start an MP5 this weekend. And before you ask, why did you make another account? I might as well tell you. My old account was I was not as mature as I am today and on my other account I would steal ideas and claim them as my own. I would also use vulgarities on a fairly regular basis and was very mean. I built a lot of enemies and some friends on that account but no respect. Looking back there was just a lot of bad memories associated with that and I wanted an escape. So thus, myOmy was formed.

No actually, I had no idea. LOL, I am slow. No, no, no, dude, your on the internet. Immaturity doesn't transfer well from real life to the internet, and I see absolutely nothing wrong with starting another channel. Do what you want to do, be who you want to be. Unless, of course, you want to be a murderer, don't be that. Anywho, no dude, its all good. Immaturity = a boring person making fun of an interesting person in most cases... Its all good bro, and I'd love to see that MP5!

myOmy (author)2014-11-18


knexguy237 (author)2014-11-14

This is very neat looking gun! I like the stock especially, and I like the front grip area. Overall, very nice job, and a definite great build.

Thanks man, glad you like the build. It took a while to perfect, a month at least, but I am happy with the end result. Thanks again man, you are part of what makes Instructables awesome!

Thanks! You're going to keep building though right? just not as much because of less building time?

No, I'm not going to stop completely, but I won't be as active. Thanks for the support bro, you are part of the reason why I keep coming back!

Good, I'm glad you'll continue building! You also are a great builder and add very much to the instructables community!

hunter999 (author)2014-11-15

Very nice, I love it! :-)

Thanks man, and it is good to hear from you!

didexo (author)2014-11-15

My favorite so far. I plan this build this weekend.

Thanks man!

TheDunkis (author)2014-11-17

Another excellent replica build. It's funny just how many AR15 pattern weapons exist whose sole purposes are to be more reliable and modular than the M4 yet we just don't adopt them. I realized that throughout history, America is very stubborn when it comes to adopting new weapons. They'll see a better weapon, but unless it's vastly cheaper, they'll say either "well, we already adopted and are mass producing this one so..." or "well, it's not a big enough improvement to justify replacing our current weapon." Meanwhile, some other nations who don't have nearly the same military spending that we do will actually adopt the latest and greatest firearm.

Did you get Advanced Warfare? Suppose you could do the HBRa3 next? I'm struggling to find what real weapon it was bsaed on, though it looks mostly like another AR15 pattern weapon.

Thanks man! You keeping busy?

When it comes to the AR15 and the rifles patterned after it, I would have to agree. Guns like the ARX-160, SIG556, and Remington ACR are, in almost every aspect, better rifles than the AR15 ever really was.

Have I gotten AW yet? LOL, do I look like a guy that has $60 to blow on a game? No, I haven't gotten it yet, but I have been watching a lot of gameplay videos, and it looks pretty boss. The HBRa3? I've thought about it, we'll see what happens. Thanks for the suggestion!

I.E. (author)2014-11-17

This is probably the best looking gun you've ever created, and probably even one the best looking guns in this site!

Thanks man, I'm glad you like this build. I personally prefer my AK-12 over any other gun that I have built, but we each have our own opinions. =D

Zombiekiller-93 (author)2014-11-14

Thanks for the instructions Red, I have stuck this in my favourites so I can build this at some point in the future since it is in Call Of Duty: Ghosts.

Awesome bro, glad you like this! Let me know what you think of the finished product, when ever you get to building it!

Don't worry Red, I will remember to let you know of my thoughts

seamster (author)2014-11-14

Very well done. Love the bright, clear photos.

That is an impressive looking finished gun!

About This Instructable




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