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Discussion Starter #1
So I follow user name's suggestions and made several changes to the magazine holder design:
1. close the top
2. make it more slim
3. add mounting option to mount on the bottom of the stock (in parallel with the receiver tube)


Here is the basic design (no mounting option)


Fused with picatinny adapter


3D printing finished. Took 10 hours with fine resolution (0.15 mm)


Installing the spring does take more effort as one end is closed now. But with a pair of tweezers it can be done (Not a problem for me since I have been doing so many times).

Stock bottom mounting


Bottom picatinny rail mounting


Full view


The vertical mounting feels pretty good. The horizontal mounting however is little bit inconvenient when pulling the charging handle or removing the magazine, A slight angle downwards maybe be helpful.

I am still experimenting with 2 other picatinny mounting options (back and side). Will post after design is verified.
 

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Discussion Starter #2
STL files can be found here:
https://www.thingiverse.com/thing:4410759

To find the right design files:
1. Download the magazine holder file based on mounting options and side of the release button (left/right)
2. Download the magazine release file based on the side of the release button (left/right)
3. download picatinny tab file

To print:
0.15mm, 80% filling, PLA, use Brim for the holder.
Support is only needed for the magazine release.
 

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Discussion Starter #4
Someone worked up this Glock Magazine Foreward Grip... https://www.thingiverse.com/thing:2233336
Thanks that's a very interesting project. The more interesting part is that initially I came with exactly the same idea to use two tabs to hold the magazine. But later ditched the idea since I was looking for a solution that's more reliable and easy to operate.
I like the ergonomic of that design, too. My design is a holder and can not be used as a grip (regarding the comfort and toughness).
 

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Have you thought about mounting the magazine parallel to the barrel (back side up) with the butt end pointing aft. The mag holder would work as a foregrip/hand hold. I didn't see anything like that in the Sub 2000 porn.
 

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Discussion Starter #6
Have you thought about mounting the magazine parallel to the barrel (back side up) with the butt end pointing aft. The mag holder would work as a foregrip/hand hold. I didn't see anything like that in the Sub 2000 porn.
That's a brilliant idea but would requires some extra effort on modeling to make it strong and comfortable to use as a grip. Will definitely think about that
 

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Discussion Starter #7
Here is another stock mounting option.

CAD for Stock mount Picatinny rail:


Off 3d printer


Because of the use of brim it things can get a little messy to clean up ... This is after the brim was removed:


Installation. Using M3 screws and nylon nuts.


CAD for magazine holder with back mount Picatinny adapter


Finally everything put together


Can occasionally brush against the holder when pulling charging handle but manageable.

STL Files uploaded to thingiverse:
https://www.thingiverse.com/thing:4410759
 

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Discussion Starter #9

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I think it is the back mounting like this one:


Adapter needs to be extended longer and add some extra materials to make it comfortable to hold
Almost exactly what I was thinking with a little more clamp to the mount, or two mounts. Gives you something other than Picatinny rail to hold.

I'm getting ready to buy a G19 mag Sub and have a G19 with a mix of G19 and G17 mags. So it would mount far enough forward to insert and remove a 17 mag.

I have no 3D printer experience and haven't seen anything like that. I was thinking of trying it in kydex.
 

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Discussion Starter #13
I want one! Where can I order???
These are 3D designs available to everyone. I uploaded to thingiverse: https://www.thingiverse.com/thing:4410759
If you have 3D printing experience it would be straightforward to follow. If not I'd be happy to answer your questions and some members here have been using Jawstec.com with good experience.

These are early iterations and I will probably continue improving the design but no promise on anything (time line or final form).
 

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Discussion Starter #15
Sorry, dumb question: So I can just reach out to Jawstec.com and order one from them?
That is not a dumb question. No, Jawstec.com is just a 3d printing service provider. They fabricate whatever things you provide them to do. You will have to decide what you need to fabricate, download the model files (STL files) and send them to Jawstec. They might ask you to specify parameters (e.g., material). I do not use them so I do not know but you may be able to check carwash in the forum he recently used their service. Lastly it is always good to do some research before jumping right into something new (3d printing).
 

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Sorry, dumb question: So I can just reach out to Jawstec.com and order one from them?
I can walk you through purchasing from JawsTec.com

1)Download the files from https://www.thingiverse.com/thing:4410759



2)The files come in a Compressed Zipped File, Right click-Extract All, this will put the files in a regular folder




3)Inside the folder you will see a folder with the Files to print and a folder with images of the files



4)Decide which files you'd like to print



5)As an example I'll chose the "Glock_Holder_Slim_Picatinny_Back_LR" and it's mag release "Mag_Release_Left"




6)Go to jawstec.com and click "Geta 3D print instant quote"



7)On the next page upload the files you want to have printed





8)After you upload each file, choose your options for each file, when I had my rear sight printed I chose MJF Nylon, Black & Vapor polished
Point to the little ? next to each option for a description of the choices






9)Your cost for the parts with the options chosen is at the top of the page



10)Click purchase



I got my parts from them in under 2 weeks



***You will also need the spring & whatever bolt ColdFire0200 used(?)
 

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Discussion Starter #20
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