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AR-15 Rifle Magazine

by crank, published

AR-15 Rifle Magazine by crank Sep 17, 2011
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Description

Print at YOUR OWN RISK, Neither the creator of this object nor thingiverse.com is responsible for anything that happens because you printed this object!

This is a near fully printable 5.56mm X 45mm or .233 REM AR-15 magazine. It is current only a 5 round magazine. I left my printed spring design out on purpose for saftey reasons. However, with a little printing experimention and some range time it can be made easily.

What is included is the magazine body, anti-tilt follower, and floorplate.

I have used this magazine, no jams or feed problems..... YET. It works, but be reminded it is only a printed ABS magazine. If you end up using a printed ABS mag spring be prepared for stress relaxation of the polymer over time, especailly if it is kept loaded over a long period of time.


DESIGN ERRATA------------------------------------------------------

09/20/2011 1:37pm MDT

The mag catch recess on the mag body(I don't know the official term) needs to move down from the feed lips approximately .010"-.015". My friends AR-15 sometimes would not feed the next round after firing. I believe that will address his problem. This will move the whole body up into the mag well approximate that far. Hopefully, that won't cause any issues with the bolt. I will post the fix sometime late tonight or early tomorrow. I apologize.

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Recent Comments

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Thingiverse went back-of-the-bus on this particular civil right shortly before selling out to Stratasys; as is always the case there were politics and dollars involved. There's plenty of alternatives that haven't been co-opted by Stratasys and don't claim ownership to your models - check out sites like cubehero, repables, defcad, grabcad, youmagine... and I'm sure there's more I'm missing.

Is there a site like thingiverse but that allows legal content and has a higher quality peer review process? (funny how legal gun parts are banned but drug paraphernalia is all over this site.)

I hate the media. This is not a weapon and its only a 5 rounder not the 30 rounders everyone is complaining about. bring it back.

License

GNU - GPL
AR-15 Rifle Magazine by crank is licensed under the GNU - GPL license.

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Instructions

Print at YOUR OWN RISK, Neither the creator of this object nor thingiverse.com is responsible for anything that happens because you printed this object!


Well, the zombies are at it again.........and you forgot your magazines out in your vehicle. Doh!

1) You Have a need for an 5.56mm X 45mm AR-15 magazine. Those pesky zombies are at your door AGAIN.

2) In a case with zombies, make sure you can hold them at bay for approximately 1 hour and 30 minutes for printing + 15-20 minutes for cleaning and sanding. Perhaps some pieces of wood nailed to the windows and doors would do the trick?

3) Download the needed files ... if zombies have not destroyed the web yet.

4) Use a 3D solid modeling program to make your printable magazine spring

5) PRINT AND HOLD OFF THOSE ZOMBIES!!! Also don't lean against any boarded up windows or doors because as we have seen in the movies the zombies will punch through the boards and grab you or your loved ones at the most in opportune time.

6) After the print is successful, clean with some 150 grit sandpaper and finish with some 400-600 grit sandpaper. Make sure it is smooth and any hanging plastic is taken care of. We wouldn't want any round feeding malfunctions while battling zombies?

7) Now to assemble. Drop the follower in the mag body, put the spring in the body making sure proper contact with the follower, and now slide the floorplate onto the the bottom of the magazine body and load.

8) By now, those boarded up windows and doors may have been compromised.... and you are holed up in your cellar with your 3D printer but now you can defend yourself against those Zombies. GOOD LUCK!

Comments

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7777773 on Apr 2, 2014 said:

Thingiverse went back-of-the-bus on this particular civil right shortly before selling out to Stratasys; as is always the case there were politics and dollars involved. There's plenty of alternatives that haven't been co-opted by Stratasys and don't claim ownership to your models - check out sites like cubehero, repables, defcad, grabcad, youmagine... and I'm sure there's more I'm missing.

mwwhited on Apr 2, 2014 said:

Is there a site like thingiverse but that allows legal content and has a higher quality peer review process? (funny how legal gun parts are banned but drug paraphernalia is all over this site.)

skipster04 on Feb 23, 2013 said:

I hate the media. This is not a weapon and its only a 5 rounder not the 30 rounders everyone is complaining about. bring it back.

loki7714 on Aug 19, 2012 said:

Any plans to increase capacity beyond 5 rounds?

LiquidBeef on Jun 11, 2012 said:

Oh, boy. A slippery slope. A slippery slope!

How long will it be until we're printing fully functional weapons from home? 5 years?

Not blaming the OP. I like this. I just worry..

dylanl on May 2, 2012 said:

Cool 8-)

will on Nov 13, 2011 said:

What software did you use to design the mag?

idolcrasher on Nov 10, 2011 said:

You should continue to replace parts of the rifle with printed ABS. Just how much of an AR-15 can you "print?" i am sure I am not the only one who wants to know.

An AK-47 might print well. It's design has a lot of tolerance. Wobbly ABS parts might still do the trick for an AK.

brad on Oct 14, 2011 said:

1 VOTE AGAINST CENSORSHIP!

inventworld on Oct 12, 2011 said:

I love it!!!! Great work!!!! Keep it up.

CowboyBob on Oct 10, 2011 said:

I am confused about which orientation to print the follower. It seems that there is no way to print it with out having more than 45 degrees of over hang. Surely the orientation shown it the green stl file is the worst way to try and print it. I tried using support material and got a large block of solid plastic that can not be removed without ruining the part.

Pointedstick on Oct 10, 2011 said:

I printed it with support material just fine. Sounds like your support settings are a little wonky. Here are mine:

Support Cross Hatch False
Support Flow Rate over Operating Flow Rate (ratio): 1.0
Support Gap over Perimeter Extrusion Width (ratio): 1.0
NoneFalse
Empty Layers Only False
Everywhere True
Exterior Only False
Support Minimum Angle (degrees): 60.0

Pointedstick on Oct 10, 2011 said:

I just printed one of these in White PLA on my Prusa and here are my initial impressions:

1. This is awesome. AWESOME. :-D
2. The tolerances are too tight. I had to do a lot of sanding to get the magazine to fit into the magazine well and the follower to move freely within the magazine body.
3. The rear of the feed lips catch the bolt and prevent it from moving forwards. I had to sand
it down a bit, perhaps leading me to my next point…
4. …There's not enough reinforcement at the back of the feed lips. That area cracked on mine when I started putting in rounds.
5. Rounds don't actually feed into the chamber, unfortunately. My AR has M4 cuts and everything, but the hollow-poin
ted rounds I charged the magazine with snagged on the metal immediately below the cuts in the lower receiver when I released the bolt. They're just too low down. I can see that if I had some FMJ rounds with spizer bullets, they'd probably feed, but the rounds are just way too low down in any event.
The bolt barely touches the top of them, too.

crank on Oct 11, 2011 said:

I was thinking about your crack ;) I just noticed that your print orientation is 90 degrees to mine. The anisotropic printing, different material properties in different direction of current Reprap, Makerbot, Up! FDM maybe also causing some issues???

crank on Oct 11, 2011 said:

Yeah, the mag release catch is too high on the mag. So, it seats the mag to low with respect to the bolt, thus causing the feed problems. My AR works, my one friends works sometime, and my other friend reported that it didn't work. I need to get the latest revision to fix the errata posted.

I apologize about the delay but I have been extremely busy these last 3 weeks. Hopefully, I can get the fix done this week.

As for the crack on the back of the feed lips, could it be a material property issue with the PLA? It would be interesting to see if you have the same problem with ABS.

mattman on Oct 1, 2011 said:

Brilliant! Now I want a 3D printer. I don't know if you have a 22LR conversion for your AR, but would you consider adapting your design to support something like that? The magazines for the CMMG adapters are only 27rnds. I would think you could extend your design to support many more.

flouSH on Sep 28, 2011 said:

This quite controversial thing made it into Netherlands's national TV: http://www.rtl.nl/xl/#/u/7b9cd... (SilverLight needed :/)

flouSH on Sep 28, 2011 said:

BTW: I don't speak Dutch, but this isn't obviously the media you want to get for a community like this ;)

HaveBlue on Sep 23, 2011 said:

Are you using the regular PP3DP filament for the spring? I'm wondering if using Stratasys ABS-M30, SABIC MG94, or other methyl methacrylate ABS might boost the strength of a printed spring. A polycarbonate/ABS blend would be really great to try, but I'm not sure if the UP! can run at a high enough temperature to feed such material?

Anonymous on Sep 21, 2011 said:

your an idiot......take responsibility for what you do. If they wanted to they can get this information from the public library.......

MrSinewave on Sep 21, 2011 said:

I was looking forward to printing this to try it out today, but the .STL files open as a *microscopic* little models (in Replicatorg).

I would scale it up, but without any information on the current (microscopic) size I can't determine the correct scale factor to scale up by. I use my printer a lot but my 3D design skills are simple at best (e.g. Sketchup + STL export plugin); any suggestions to help me get this on track?

on Sep 21, 2011 said:

inches -
&
gt; mm or mm-
&
gt; inches. Scale it to 25.4 times the current size. You're set up as inches for your default dimension, and the .stl file is in mm, or the other way around.

Mike77 on Sep 21, 2011 said:

Oh no! For the sake of the children!(tm) That argument never ceases to offend me.

Get your personal rubbish out in the open as a preference, not a morality play. I am the father of three inquisitive and resourceful children, and I get to decide what's appropriate for them, not anyone else.

I personally dislike firearms, (because of the noise and smell more than anything else,
but that's hardly the point) but I dislike opinion masked as a 'call for the greater good' far more. A firearm is at least an interesting application of mechanical and chemical principles, what value do you bring to the table with your sweeping declarations?

A person is responsible for their actio
ns, anything else is nonsensical. For example, if somebody uses one of your designs to hurt someone, (regardless of intended purpose, "I never meant it that way" is a defense so weak as to be irrelevant) are YOU responsible? How about the printer maker? The designer? The people who wrote the CAD
software? The people who taught the designers CAD concepts? Your parents (who did after all contribute DNA essential to your existence, without which you could never have designed the item in question!)?

Am I reducing your argument to absurdity? Perhaps. But then perhaps it was simply absurd
to begin with.

Anonymous on Sep 21, 2011 said:

Actually, manufacturing your own firearm receiver is perfectly legal in the US as long as you don't ever sell or otherwise transfer it. There is a cottage industry of people who don't want to have registered weapons and/or cannot get commercially produced weapons because of red tape, that manufacture their own perfectly legal weapons.

7777773 on Sep 21, 2011 said:

Thanks! I don't suppose you have an AR-10 as well, do you? At $40 a mag, I've been looking at printing my own, but have not yet had much success in reverse engineering functional parts for pretty much anything.

Anonymous on Sep 21, 2011 said:

yzord must be a "Pretty Pretty Little Princess" and so afraid of those icky guns.

what a total Pansy Ass

Anonymous on Sep 21, 2011 said:

Awesome work

Brent on Sep 21, 2011 said:

I've an owned many an AR style rifle over the years (Armalite rifle, duh) and they've never killed anyone... Do you supose I am using it wrong? Oh yeah, do quite a bit of hunting with it too, mostly coyotes and varmints, small game you know. The 5.56 is what is known as an "intermediate round" not really that powerful... That is, compared to your grampa's 30-06 deer rifle, well maybe not YOUR grampa, I would imagine you live in a state or country that gave up your God given right to arms generations ago. Do you suppose Colt get sued when someone gets killed with one of their AR pattern rifles? It really hasnt come up since these so called "assualt rifles" are rarely used in crime.... Oh yeah, a real assault weapon is a select fire (read, auto or bust) rifle that fires an intermediate cartridge. As opposed to a battle rifle that fires a full power cartridge, namely .308 NATO or similar.

Anonymous on Sep 21, 2011 said:

Oh you Americans and your belief that you have a right to bear arms. As far as I'm concerned, there should be no right to bear arms, it's a privilege to be able to have and use firearms, if you Americans thought the same way, you might not have so much gun crime.

Anonymous on Sep 21, 2011 said:

Thank God someone with Facts and Common Sense

Anonymous on Sep 21, 2011 said:

Wow.. first of all you're an ignorant for thinking that a magazine is a weapon..

Secondly, you're a more ignorant for thinking that a gun can kill someone anymore than a car, knife, or baseball bat can kill someone.. that's the act of a human.

And you made a sword? What a freakin' hypocrite.. how many have been killed by people with swords in the course of human history??

crank on Sep 20, 2011 said:

Well, I found a design errata in the mag body. The mag catch recess on the mag body(I don't know the official term) needs to move down from the feed lips approximately .010"-.015". My friends AR-15 sometimes would not feed the next round after firing. I believe that will address his problem. This will move the whole body up into the mag well approximate that far. Hopefully, that won't cause any issues with the bolt. I will post the fix sometime late tonight or early tomorrow. I apologize.

AUGuru on Sep 20, 2011 said:

Actually no, AR stands for ArmaLite, the original manufacturer. 15 is the model number. The AR-7 for example could hardly be called an assualt rifle. http://en.wikipedia.org/wiki/A...

Anonymous on Sep 20, 2011 said:

Geez dude you must really be a sissy

Anonymous on Sep 20, 2011 said:

Very Nice, Thank you

Anonymous on Sep 20, 2011 said:

Don't let things like facts get in the way of gun politics.

themitch22 on Sep 20, 2011 said:

That's awesome. Maybe I can modify my safety lever for the AR http://www.thingiverse.com/thi... .

I assume this isn't makerbot printable since there's unsupported parts. Maybe a makerbot printable one would be nice. I'll attempt to print it and see how it does

Anonymous on Sep 20, 2011 said:

I wonder if you could print a diaper for the makerguy?

Kotrotsos on Sep 20, 2011 said:

Guns don't kill people....well, you know the rest.

This is as much of a gun as an arrow holder is a crossbow.

Do we ban, or not allow instructions to smith a knife blade by hammer, anvil and forge- even though that is considered craftsmanship?

Jolijar on Sep 20, 2011 said:

Bullets do...

crank on Sep 20, 2011 said:

AR stands for Armalite Rifle.

Anonymous on Sep 20, 2011 said:

Sorry, but AR in AR-15 does not stand for Assault Rifle. It stands for Armalite, the original designers of the rifle.

crank on Sep 20, 2011 said:

Since, proliferation of low cost 3D printers is going at an explosive pace... this is still something that has yet to be defined and is being brought up in couple of white papers associated with the growth of the use of MakerBots, RepRaps, etc.. If you use the same logic the same goes for MakerBot Industries are they responsible for anything printed by their printers, is Thingiverse? After all they designed it and uploaded it to thingivers. Am I responsible for anything that another person does with this design. I have take reasonable design steps that limit functionality while still making it functional for the average AR-15 user that has access to a 3D printer.

Whatever the decision it should not be made lightly, physical object/design censorship is a totally new realm.

Anonymous on Sep 20, 2011 said:

Children also do not possess credit cards or the means to operate their own 3D printers without the help of an adult with money so I don't see how they would be able to cause any harm with this design.

fmotta on Sep 20, 2011 said:

Any chance of putting the torsion spring up as well?

Thanks in advance

7777773 on Sep 20, 2011 said:

I think he's taking the McGuyver approach. It shouldn't be hard to model, and we have a screenshot to emulate already.

crank on Sep 20, 2011 said:

We'll see....

KingLudd on Sep 20, 2011 said:

This is a functional and essential component of a machine that is specifically designed for killing people. How is it not a weapon? :)

Is this little thing I posted over here a weapon?
http://www.thingiverse.com/thi...

The question is not if weapons are good or bad. The question is if Thingiverse is the place for weapons.

Anonymous on Sep 23, 2011 said:

You Hoplophobe.

Firearms are for defending your self and your loved ones.

You do have loved ones don't you?

Anonymous on Sep 20, 2011 said:

No, what you posted is not a weapon, it is a file. However, if you print that file and try to sell it on eBay you will go to jail. If I print this mag and sell it on ebay, I will not.

sssidney on Sep 20, 2011 said:

UGH! I hate this too.

Anonymous on Sep 20, 2011 said:

Amusing, that some people feel genuine hatred to a file representing a springbox.

Pointedstick on Sep 20, 2011 said:

Then keep it to yourself. How would you like it if someone commented that they hated something that you worked hard to design? It's very rude. I know that firearms are frightening to some people, but at least try to remember common courtesy and politeness if you want to comment.

on Sep 19, 2011 said:

Hmmmm, a friend just suggested glow in the dark for this.

crank on Sep 20, 2011 said:

THAT WOULD BE AWESOME!! :)

Pointedstick on Sep 19, 2011 said:

Dude, why judge? This is just a box with a spring. And what's with the hoplophobia? You live in Switzerland; didn't you carry an automatic rifle during your service? It seems like you of all people should understand that weapons in the right hands (e.g. yours during your service) can be used to protect.

Pointedstick on Sep 19, 2011 said:

Totally awesome. Have you done any rapid fire drills yet? I'd worry that the high heat in the breach might melt the feed lips. Is the follower strong enough for the bolt to lock back when the magazine is empty?

crank on Sep 20, 2011 said:

The bolt catch works just fine. Since I only have one printed mag it kinda of hard to to do multiple mag changes and continue the rapid fire drill :) But it does just fine with a rapid fire of the 5 rounds. While it does get hot there is no melting yet... However, with a larger mag that may turn into a problem.

AUGuru on Sep 19, 2011 said:

Funny yzorg, on your "Things I Made" page, you made a sword... that's more of a weapon than this spring loaded box is.

ROBK636 on Sep 19, 2011 said:

Looks good, maybe a video from the range?

crank on Sep 20, 2011 said:

I was on a time crunch and I was too excited to try it out = I forgot. I will get one next time though.

Landru on Sep 19, 2011 said:

I'm pretty sure this is not a weapon. I see no way this part (alone, or in combination with any other part on thingiverse) can do a person any more harm than a solid block of plastic.

on Sep 18, 2011 said:

I seem to be running into a wall thickness bug or something - I'm getting a hollow wall, rather than the 90% infill. I remember something about a skeinforge bug regarding this, what settings did you print it successfully with?

crank on Sep 19, 2011 said:

I printed it on my UP! I have not tried printing it on my Cupcake CNC, yet..... Sorry.

Dang and I forgot to log in on the previous post. DOH!!

Anonymous on Sep 19, 2011 said:

I printed it on my UP! I have not tried printing it on my Cupcake CNC, yet..... Sorry.

BenJackson on Sep 18, 2011 said:

I think that's where you need to set "0 extra shells"

on Sep 18, 2011 said:

Funny, I've put tens of thousands of rounds through my AR-15, and I haven't killed anyone at all. Maybe I'm just using it wrong. Here I was, trying to precisely punch holes in paper.

Please keep your hopolophobic comments to yourself.

gunpowder on Sep 18, 2011 said:

This is great, it really highlights the strength of the printed parts in something that has to be pretty rugged and accurate to function correctly.. Major kudos to you, though this might get some unwanted attention if you scale it up to a 30rd banana mag or snail mag. ;) vive la 3D printed revolution!

I've been waiting for someone to post up a standardized Picatinny/Weaver rail mount with parametric rings for scopes, surefires, lasers etc. :)

sigstoat on Sep 21, 2011 said:

There is already a section of rail: http://www.thingiverse.com/thi...

The cross section is perfect, some spare scope rings I had, and an EOTech attached perfectly. The spacing in the gaps is off by some small fraction of a millimeter. Check it against the specs.

I've been working on a parameterized scope unimount, perhaps I'll put it up as-is, now that I've made an
account.

crank on Sep 18, 2011 said:

Yeah, Picatinny rail mount would be interesting. Especially to see how the Z-axis step resolution and ABS material properties affect the mounting of rings and lasers and their precision. I was also thinking of some quad rail covers and a forward front grips

on Sep 18, 2011 said:

Oh, nice idea, that shouldn't be too hard to draw up in OpenSCAD. And if yzorg's type get too noisy, we could always spin up another site for that sort of thing. Hrm, far as that goes...

Anonymous on Sep 17, 2011 said:

This is great I cant wait to slap one into my AR

The only thing is the scare for the .stl is far too small. Could you attach the right scale .stl for the body of the Mag

NewPerfection on Sep 17, 2011 said:

I'm guessing he designed it in inches, which means it needs to be scaled by 25.4x for millimeters.

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