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Hoborginc — Modular Paper AR15 V3

Published: 2011-07-25 23:28:01 +0000 UTC; Views: 213203; Favourites: 544; Downloads: 8066
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Description This is an AR-15 papercraft, the third iteration of a long project that has undergone several stages.

AR V3A31 M4 Carbine (PNG, 70 MB) Alternative link (Mediafire)
AR V3A31 M4 Carbine (PDF, 31 MB) Alternative link (Mediafire)
Most recent version, includes basic M4 components in multiple colors. Main Page.

AR Accessories (PNG, 62 MB) Alternative link (Mediafire)
AR Accessories (PDF, 31 MB) Alternative link (Mediafire)
Compilation of accessories and parts compatible with this version.

AR V3A416 (Hk416)
Related model, with some degree of compatibility.

FAQs:

1. What kind of paper does this use?

90lbs/185g
Letter or A4 size. Scale to printable area (don't try to print them at original image size, because they won't match).

2. Where is the previous V3 package?

Superseded by the V3A31 package, which improves on it in every way. Together with the accessories package, it include a large number of previous and updated parts.

3. What do the version numbers mean?

V1 & V2: Old versions, both handmade. The receivers, barrels, and magazines are unique and incompatible with anything else. Some accessories like sights can be interchanged with other versions. Handguards are also cross-compatible, because versions 1 through 3 use barrels with the same thick diameter. However, the design quality of versions 1 and 2 is very poor, so I don't recommend building them.

V3A2: Handmade V3 lower receiver that only accepts V2 (undersized) magazines.

V3: Current version, digitalized and generally better build quality, although with some notable weaknesses, such as the barrel and stock. If a receiver is labeled V3A3, that means it takes V3 magazines. However, there are some slight differences in V3 magazines, so some may fit better than others. V3 magwell has a retaining bar at the back that holds the magazine in place.

V3A416: Hk416 that uses V3 receiver measurements and magazine system. As the two-tone build shows, the receivers are cross-compatible. The main difference is the way the stock attaches (rear ring, buffer tube, and stock) and the way the barrel attaches (it goes into the upper receiver). The upper receiver also fits together better, but, being an Hk416 upper, it is taller only matches the Hk416 handguard. Overall, this is a much stronger model, but retains the unrealistic V3 magazine system.

V3A31: Same magwell and receiver dimensions, but improved buffer tube and barrel, and more realistic minor details. In short, it's an application of the lessons learned from the V3A416 model back to the standard M4 carbine configuration.

V4: Hypothetical next version, with realistic proportions and mag release. Although some of the current parts can be considered "V4" parts, I have barely started actually making a V4 receiver. The stock and barrel will attach similarly to the V3A416. There is no estimated release date.
Related content
Comments: 701

Hoborginc In reply to ??? [2012-12-27 15:34:51 +0000 UTC]

Yes, the dust cover bump goes on a little square, and faces toward the inside, as can be seen in "finished03.jpg"

Is that the little part you're referring to?

It doesn't actually serve a purpose on this model, but in reality, it's what opens the dust cover, because it would fit into a recess on the bolt carrier, until the bolt carrier moves and pushes it open. Picture It would also have a little spring-loaded pin inside it, which fits under the ejection port rim to keep the dust cover closed.

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Vincentmrl In reply to Hoborginc [2012-12-27 15:52:06 +0000 UTC]

yes it's that piece. What are the top box walls for? Are they to make the charging handle not fall randomly?

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Hoborginc In reply to Vincentmrl [2012-12-27 16:31:28 +0000 UTC]

Yes, they keep the charging handle centered.

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Vincentmrl In reply to Hoborginc [2013-01-01 14:48:17 +0000 UTC]

*builds top rail pieces for the rest of his life*
I almost done the top rail and built the forward assist, only need to build the rest of page 3 and page 5. Where do I glue the barrel well? On the front tabs on the model?

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Hoborginc In reply to Vincentmrl [2013-01-01 17:12:59 +0000 UTC]

First, attach the Front Face, which covers up the front.

Then attach the barrel well over that. The hatched circle is where you put the glue, and the delta ring hooks should be at the 12 and 6 o'clock positions. Refer to "finished01.jpg" and "assembly attachment.jpg" (in the barrel folder).

Make sure the barrel well is attached very solidly to the upper, because this is probably the weakest part of the model. The barrel attaching to the barrel well is pretty sturdy, but the barrel well attaching to the upper needs some attention.

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Vincentmrl In reply to Hoborginc [2013-01-02 11:28:16 +0000 UTC]

The front face glues on the top tabs and the circular part right? I need to build the internal walls and the charging handle then I build the front. I'm still thinking about all the rail pieces being 80 in total, they take a lot of time and can get boring. I've built the front screw to check before finishing the upper and it fits correctly and the upper turns fine. Today I'll finish the top rails and build the internal walls. I'm always getting amazed by the quality of this model

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Hoborginc In reply to Vincentmrl [2013-01-02 12:41:08 +0000 UTC]

Yeah, there should be enough surfaces on the front to glue the front face onto. As long as it covers everything up, you're fine. Build the internal walls first, then attach the front face. The rails, bolt and charging handle, and the barrel-well can all go on after that.

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Vincentmrl In reply to Hoborginc [2013-01-08 21:07:37 +0000 UTC]

What should I build after I complete the upper?

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Hoborginc In reply to Vincentmrl [2013-01-09 00:20:28 +0000 UTC]

Barrel, then handguard, then sights or stock.

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Vincentmrl In reply to Hoborginc [2013-01-09 00:57:59 +0000 UTC]

Since I want this to look a bit call of duty 4ish, I saw that the barrel in the final pic is shorter, so what one I have to use to match its lenght?

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Hoborginc In reply to Vincentmrl [2013-01-09 02:08:53 +0000 UTC]

Go with 14.5 inches, because it's the normal M4 barrel length.

The build in the pictures has a 11.5 inch SBR barrel.
16 inches is the minimum for a regular civilian AR.
20 inches is the M16 barrel length.

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Vincentmrl In reply to Hoborginc [2013-01-12 11:32:04 +0000 UTC]

ok, I have a little question about the delta ring hook, the open face should be seen and the face with the hole and the glue marks should be glued on the upper receiver?

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Hoborginc In reply to Vincentmrl [2013-01-12 23:59:34 +0000 UTC]

That's right. (The "delta ring hooks" themselves are the little boxes on top and bottom, while the cylinder itself is the "barrel well")
Look at the barrel construction pictures for an idea of how the barrel will interface with it.

Also, I'd recommend being especially careful to make sure the barrel well is very well glued to the receiver. The connection between the barrel well and the barrel is very strong, but the connection between the barrel well and the upper is a more likely failure point.

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Vincentmrl In reply to Hoborginc [2013-01-13 13:20:33 +0000 UTC]

ok. Time for another question: Where does the threaded barrel end go in the barrel? I know it's on the end but I don't see it anywhere in the pics. Also do I have to glue the barrel to something after I finish it?

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Hoborginc In reply to Vincentmrl [2013-01-13 17:16:23 +0000 UTC]

It's not visible in the pics because the flash hiders cover it completely.

Glue the barrel to the barrel well.

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Vincentmrl In reply to Hoborginc [2013-01-13 17:51:28 +0000 UTC]

So it's inside the flash hiders?
When do I have to put and glue the delta ring? Can you give me a build order for the barrel parts (I mean the grip, delta ring, sights ecc, not the barrel pieces)?

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Hoborginc In reply to Vincentmrl [2013-01-13 21:23:56 +0000 UTC]

Yes, it's inside the flash hider.
Build the barrel and attach it to the upper. Then build the delta ring and slide it over the barrel, to its position, covering the place where the barrel attaches to the upper. Then attach the handguard, and finally the sights.

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Vincentmrl In reply to Hoborginc [2013-02-13 15:21:52 +0000 UTC]

The barrel I built breaks sometimes and I have to reglue parts together, so I removed it from the upper (with an x-acto knife) and I'm building the barrel, then the delta ring, then handguard and last glue all parts on the upper. Is this a good way to prevent unsticking?

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Hoborginc In reply to Vincentmrl [2013-02-14 00:31:58 +0000 UTC]

I've noticed that unsticking isn't due to the glue breaking apart as much as it's due to the glued layer of paper peeling off from the rest of the paper.
You can re-glue things in pretty much any order.

The most fragile point is where the "barrel well" meets the upper. This must be made as sturdy as possible, because it's always the first point of failure.

👍: 0 ⏩: 1

Vincentmrl In reply to Hoborginc [2013-02-15 01:04:06 +0000 UTC]

ok I get it. Now I'm a bit confused about the delta ring: it doesn't cover all that large barrel beginning part, leaving a little of space that is same length as the smaller ring in the beginning. Is it supposed to be like this or there's something different? Also what's the little gas tube stub's purpose other than detail and connecting the delta ring with the handle?

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Hoborginc In reply to Vincentmrl [2013-02-15 01:09:03 +0000 UTC]

Yes, the gas tube stub is supposed to be visible. It's only meant for detail. In reality, it would go all the way from the front sight to the upper, but here we just have the visible part.

The delta ring is supposed to be positioned forward a little bit, leaving the smaller ring behind it. On a real AR, the delta ring is spring-pushed forward, and can be pulled back, which is how you would remove the handguard. This model does not duplicate that functionality, but it preserves the delta ring's location.

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Vincentmrl In reply to Hoborginc [2013-02-16 16:36:11 +0000 UTC]

Should I glue the delta ring and the handguard on the barrel?

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Hoborginc In reply to Vincentmrl [2013-02-16 18:20:02 +0000 UTC]

Yeah.

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Vincentmrl In reply to Hoborginc [2013-02-18 16:45:49 +0000 UTC]

I see there is a glue line on the top handguard core, should I glue the curved faces where the line is?

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Hoborginc In reply to Vincentmrl [2013-02-18 17:26:25 +0000 UTC]

Yeah, those glue lines on each side of the top core are where the tabs of the curved faces attach. The top core is slightly taller than the others.

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Vincentmrl In reply to ??? [2012-12-18 16:19:27 +0000 UTC]

oh also, is the piece under magwell left detail for the curve of that piece or it's for something else?

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LenilsonZabuza In reply to ??? [2012-10-26 20:52:49 +0000 UTC]

tkx man, u'r amazing *---*

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NIL666 In reply to ??? [2012-10-15 02:27:51 +0000 UTC]

hi! first of all, i gotta thank you for creating such an amazing papercraft.
i hope this is not too much for me to ask, but would it be possible to upload a pattern for the Magpull PRS stock in tan color?also, if possible, maybe some grip alternatives? (like the PSG styled handgrip for M4/AR-15?)

i am planning to build this papercraft with some modification.

again, thanks, mate!

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Hoborginc In reply to NIL666 [2012-10-15 04:10:01 +0000 UTC]

Unfortunately, I can't do very much right now, and whenever I do find time for papercraft, it goes to the 1911. I will keep in mind that there is demand for the PRS stock and marksman-oriented accessories.

Something else that I'm considering if I get back to the AR, is a monolithic-type upper, because one of the main problems with the current upper is that the delta ring area isn't as sturdy as it should be. However, there is no estimated date for this, so I can't guarantee anything.

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NIL666 In reply to Hoborginc [2012-10-15 08:20:20 +0000 UTC]

Thanks for that, mate!

regarding the delta ring, why dont you try to expand the barrel more to the internal upper receiver area, and giving more support there? i think that would reinforce the barrel and the delta ring as well. pardon me if this is not a good solution.

Thank you, and great work!

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Airsoftnl In reply to ??? [2012-09-23 18:10:36 +0000 UTC]

Do you have something like a tutorial on how to put the parts right together? Thnx!

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Hoborginc In reply to Airsoftnl [2012-09-24 22:09:13 +0000 UTC]

There's no specific tutorial, but there is annotation, and some construction images. Once an individual part is built, attaching it is pretty straightforward.

👍: 0 ⏩: 1

Airsoftnl In reply to Hoborginc [2012-09-25 16:05:57 +0000 UTC]

An Other Question.. How heavy was your paper / cardboard? And what kind? Can you give me a site or something?

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Hoborginc In reply to Airsoftnl [2012-09-26 00:39:24 +0000 UTC]

I just used 90lb watercolor paper, but I wouldn't say it's an ideal choice, because it doesn't curve easily enough.

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Airsoftnl In reply to Hoborginc [2012-09-26 10:00:38 +0000 UTC]

I mean how heavy! Like 150gr M2 or heavyer....

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Hoborginc In reply to Airsoftnl [2012-09-26 15:31:51 +0000 UTC]

185gsm, although anything between 90 and 185 should be good.

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Airsoftnl In reply to Hoborginc [2012-10-03 06:00:23 +0000 UTC]

I think 125 is the best! ( i did some tests )

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Airsoftnl In reply to Hoborginc [2012-10-01 05:40:38 +0000 UTC]

My last question. Did you print it with an A4 printer? I mean with A4 paper? Thnx!

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Hoborginc In reply to Airsoftnl [2012-10-01 13:32:41 +0000 UTC]

I use 8.5x11" paper, but any size that's roughly the same width (216mm) is fine. A4 is similar enough at 210mm that it should not make a significant difference.

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Airsoftnl In reply to Hoborginc [2012-09-27 12:23:31 +0000 UTC]

I think 90 is to light! I tried it with 80 grams so 90 won't be enough!

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Airsoftnl In reply to ??? [2012-09-23 15:18:55 +0000 UTC]

Oh wait! I see, it is 1:1 scale :$ sorry!

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Airsoftnl In reply to ??? [2012-09-23 15:18:03 +0000 UTC]

Is it 1:1 scale?

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TheQRoks In reply to ??? [2012-08-29 03:23:29 +0000 UTC]

holy crap

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Stevebot-7 In reply to ??? [2012-08-16 02:47:12 +0000 UTC]

Wow, this looks amazing. Excellent work.

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HiRisque In reply to ??? [2012-07-31 03:21:57 +0000 UTC]

And I still can't straighten out my machine, you should have YOUR ___ kicked for putting that friggen site out for downloads.

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HiRisque In reply to ??? [2012-07-31 01:49:36 +0000 UTC]

Hey
That send space site really screwed up my computer.

What the HELL were you thinking putting it there?

Thanks a bunch.

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Hoborginc In reply to HiRisque [2012-07-31 03:52:00 +0000 UTC]

All right, everything is mediafire now.

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Hoborginc In reply to HiRisque [2012-07-31 03:30:27 +0000 UTC]

You probably clicked one of the fake buttons, which wouldn't show up if you had used adblock.

That said, I will find other hosting.

It used to be hosted on megaupload, but that's not usable anymore.

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skmagiik In reply to ??? [2012-07-29 03:37:59 +0000 UTC]

It appears the Upper reciever is missing the tan page 5.

👍: 0 ⏩: 1

Hoborginc In reply to skmagiik [2012-07-29 10:46:24 +0000 UTC]

Since they're internal parts, they're only available in gray. See the construction pictures and my build - the bolt is gray even though the rest is tan.

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