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DW Small Frame 3-D Printed Shoulder Stock prototype is finally a reality
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Scout728
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October 15, 2024 - 8:49 pm
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I have been jaw-jacking about this for years.   I finally got a few engineers drunk enough to say "hell yeah" last year, and the design and first printing is done.  

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The original concept was and still is: that separate inserts for the stock will allow you to switch from Small Frame to Large Frame using the same stock.

This is just a first prototype.   My buddy moved to Nashville, so this is going to take longer to get to the final product.

As in previous conversations, a Small Frame with a 15" barrel measures 16 & 3/8" to the breach/firing pin.    The FBI says that it does not meet criteria as a SBR.    However, any LEO could mistake it as such.   Here's to tempting fate!

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DA....64
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mister callan
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October 16, 2024 - 2:44 pm
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Whats the legal status of that?

Does it have to "become" an SBR?

Matthew Quigley on handguns:

“I said I never had much use for one. Never said

I didn't know how to use it.”

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Scout728
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October 16, 2024 - 4:58 pm
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mister callan said
Whats the legal status of that?

Does it have to "become" an SBR?

  

Only SBR criteria if shorter barrel than the 15".

So, on this prototype, he decided to make the stock a two-piece so it would fit in a pistol case....(Nice idea.  I did not consider that).  But the plan was originally a one piece.

I may have it by the weekend for testing.   Stay tuned.

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mister callan
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October 17, 2024 - 3:30 pm
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Perhaps I confused my categories.

If a person has a pistol and an attachable shoulder stock, does this constitute possession of an NFA firearm?

 
Yes, unless the barrel of the pistol is at least 16 inches in length (and the overall length of the firearm with stock attached is at least 26 inches). However, certain stocked handguns, such as original semiautomatic Mauser “Broomhandles” and Lugers, have been removed from the purview of the NFA as collectors’ items.
[26 U.S.C. 5845, 27 CFR 479.11]

Matthew Quigley on handguns:

“I said I never had much use for one. Never said

I didn't know how to use it.”

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Scout728
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October 17, 2024 - 5:14 pm
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Total length of setup from barrel-end to the recoil pad should be 31 inches

If test firing on the two-piece design goes well, there may be a one-piece and two-piece design.   He has not yet incorporated the Large Frame/Small Frame inserts into the design yet.

As exited about this as I am the first prototype coming, we are still a long way from final product.

When we do come up with a finished product it can be printed in almost any color. 

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Scout728
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October 21, 2024 - 4:21 pm
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The first prototype printed stock has arrived.    The fit is not perfect...most likely because the model had no trigger guard.   I will determine where to file for a better fit.   Only other issue seems to be the sunken screw hole for the grip, stock is too small.   Little problems.   Testing will have to wait.

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Broken down, it will fit in a briefcase

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KurtB
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October 22, 2024 - 9:05 am
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Are you able to include the muzzle brake when measuring the barrel length? If yes, that could get you to the legal 16" minimum length, right?

DW-15-2VH15-7-Barrel-Super-Pac.jpeg

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Stinger
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October 22, 2024 - 12:00 pm
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KurtB said
Are you able to include the muzzle brake when measuring the barrel length?

I believe the muzzle brake must be permanently mounted (welded), in order to count in barrel length.

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KurtB
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mister callan
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October 22, 2024 - 3:29 pm
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Afraid not, all must be "pinned & welded" to count.

Revolver is measured from rear of actual barrel (shroud don't count  either.) to actual barrel muzzle. The cylinder doesn't count because its "Not a part of the barrel."

That would be difficult with the DW's switch barrel, shroud & nut configuration.

Matthew Quigley on handguns:

“I said I never had much use for one. Never said

I didn't know how to use it.”

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rwsem
SOWELA (Southwest Louisiana)

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October 23, 2024 - 9:21 am
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^^ correct.  The brake would need to be welded to the barrel and the barrel welded to the frame

Technically, the glass is always full; half liquid, half air....

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KurtB
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October 23, 2024 - 12:00 pm
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Boy, that destroys the inherent value of a Dan.  The best part is the ability to swap to different barrel lengths. 

DW-15-2VH15-7-Barrel-Super-Pac.jpeg

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Scout728
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October 23, 2024 - 5:26 pm
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Back to the tax stamp.   The question is when it gets registered as an SBR, does the barrel length have to be listed?   Keeping barrel options is part of the appeal.

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mister callan
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October 23, 2024 - 9:24 pm
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Honestly not sure. I believe its just an under/over thing.

No one in their right mind would register one over & under is just that, by how much doesn't seem to matter.

Matthew Quigley on handguns:

“I said I never had much use for one. Never said

I didn't know how to use it.”

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rwsem
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October 24, 2024 - 4:32 am
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Another consideration- IF it were to be approved (I have my doubts) then it could only be transferred/ sold as an NFA item in perpetuity. 

Technically, the glass is always full; half liquid, half air....

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Laremm
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October 24, 2024 - 6:27 pm
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Thompson Center had an issue years ago about the legality of it. You can buy a longer barrel and rifle stock but can put a shorter barrel and leave the rifle stock. 

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Charger Fan
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October 27, 2024 - 3:08 pm
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Well Scout, so far your first attempt looks pretty cool. I like your interchangeable idea for small frame/large frame grip section. If using it on a large frame, you could see if EWK could whip up a 15" large frame BA for ya! Or maybe even a 16"?

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605Dart
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October 27, 2024 - 4:42 pm
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If it's not attached to a frame then there's no harm/no foul, just like having a sub 16" AR upper in you possession without a SBR stamp or a registered pistol lower.

Note I didn't say attached.

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DakotaJack
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October 29, 2024 - 8:39 am
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605Dart said
If it's not attached to a frame then there's no harm/no foul, just like having a sub 16" AR upper in you possession without a SBR stamp or a registered pistol lower.

Note I didn't say attached.

  

Dart - please take note: If you are in possession of a lower receiver, and also in "constructive possession" of an upper assy. with a barrel less than 16", regardless if it is attached to the firearm or not,  you are considered to be in possession of short barrelled rifle.  You would need a stamp even if the lower receiver is sitting in your safe in your bedroom and the 15" upper is sitting in your car.  "Constructive possession" means you may not actually have physical possession of the item, but you have control of it or the right to control it (the upper assy. in your car, or a bag of weed in the trunk when you you get pulled over for speeding).     If you don't have a stamp it could cost you a lot of time and money.  This of course does not apply if the lower receiver was originally sold as an assembled pistol (meaning it was assembled as a pistol in its first sale, but you cannot put a stock on a pistol since it will become and SBR).  The reg's. are pretty clear about this and although there are a few gray areas, you don't want to be caught in one of those "gray" areas.   

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