Introduction: K'NEX M21

Picture of K'NEX M21
The Springfield Armory M21 has been one of my favorite firearms for quite some time now, and this can be seen by my posting 2 previous versions (V.1, V.2). I like the real M21 mainly for how cool it looks overall, but its features are pretty fantastic all the same.

This, my K'NEX version, is better than my other two versions for several reasons. First off, it is exactly the same length and size as the M21 (I have had the chance to hold a M14 since my second version, and the M14's body is almost exactly the same as the M21's), it is also sturdier, the stock is better, the barrel is better, the magazine and magazine lock are better, the trigger guard and almost all of the other parts of the body are more accurate than either of my first two versions. It gets better range than either of my first two versions, as the fake barrel does not get in the way of the projectile, it is much easier to hold, and, in comparison with my other two versions, it provides more comfort to do so.

  • Sturdy
  • Magazine lock
  • 20 - 30 rd. blue rod magazine
  • Looks just like the real thing
  • Easy to use
  • Nice iron sights
  • Nice scope (IMO)
  • Great range: 40 - 70 ft. (speculatively)
  • Great pin-pull distance

Instructions will not be made, but internal pics might be taken. If you would like to see the M14 version of this gun, click here.

-The Red Book of Westmarch


JonnyBGood (author)2013-12-22

Looks legit! Never an issue for you.

Thanks bro! I am glad you think it is lawful. XD

Heck yeah!! XD
It's to the point now I don't even look for reference pictures anymore I just know it looks right.

Wow bro, that is a VERY high complement, and I am glad you think and do so. =D

Ah, this is still one of my favorite builds of all time.

War pig (author)2013-12-21

Looks really cool man!!!

Thanks man!!!

Zombiekiller-93 (author)2013-12-24

Looks great, I like this and your M14 and mine of course, you probably think I took my K'nex M14 apart but no I didn't because I love it so much and my PPSh-41 and Thompson. Merry Xmas

You have not taken my other M14 apart yet?

No I didn't take it apart, the one I used in my review is still in my room in one piece along with the other things I made in my reviews except for 6ft Ferris Wheel

megustatrains (author)2013-12-24

looks awesome as usual :D

Thanks bro!

are you ever going to make instructions for this? or any other one of your epic snipers? hope so and np :D

Not for my M21, but I am intending on taking internal pics for my next build.

AUG-5OM3 (author)2013-12-21

Mmm. Dat Stock! you're kinda on a knexing spee aen't you? XD
Keep up the great work!

Well, I assume you mean "spree," not "spee," 'cause no, I am not on a K'NEXing spee, but I am on a K"NEXing spree. Thanks bro, I am glad you like... the stock. XD

Yes lol my 'R' button is not very good anymore on my laptop so if i write something and the r is missing everywhere don't be suprised xD

Ah, I see. =D

Really? Huh, I guess I did not know that. Thanks man!

blockabloke (author)2013-12-24

Sweet! I'm not really that much of a sniper rifle kind of guy but I've got to admit this is Awesome! :D

Thanks man!

Lucas The Boss (author)2013-12-24

This is amazing you hit this one out of the park I favorited

Thanks bro, I'm glad you like it. =D

Johnhall14 (author)2013-12-22

Nice =)

Thanks bro!

Wow bro, this is the first of my builds that you have favorited. =D

sandroknexmaster (author)2013-12-21

Wow, looks nice!

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.
More by The Red Book of Westmarch:K'NEX Rezosu Z65 - 100th Instructable!!!K'NEX ThorncannonK'NEX Fusion Rifle (Prism Schism) + Internals
Add instructable to: