Custom Polycarbonate M-14/ M-1A Stock

[DocJekyll]

Hello everyone. I know its my first post on the site and its a whopper, but I was curious if anyone would happen to have a set of plans or design specs for the standard wood or synthetic stock for the M-14/M-1A.

I am planning on using a program I have to design and build a custom stock out of a polycarbonate like glass infused teflon similar in modularity to that of the ACR. I have a company near me that has helped with similar parts that I have made out of steel, and they say they could do a synthetic cut out for me as long as I provide them the model. Any help would be awesome.

Once I have completed design and have copyrights in place I will release photos of the stock so that you can see it for yourself. Any help though, would be greatly appreciated.

 

[MLC]

Re: Custom Polycarbonate M-14/ M-1A Stock

The wood stocks cost nothing in comparison to the cost of the project you are talking about.
Buy a wood one and get it scanned.

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

Well I have a scout but no longer have a stock for it as I will be sliding an EBR stock on it, and since there are no close places to get something scanned it would be easier and cheaper to use blue prints of some kind to base the design off of.

 

[MK14 SEI]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DocJekyll</div><div class="ubbcode-body">... polycarbonate like glass infused teflon similar in modularity to that of the ACR. </div></div>

Compared to the JAE, how much of a weight savings will benefit your design?

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: H2O MAN</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DocJekyll</div><div class="ubbcode-body">... polycarbonate like glass infused teflon similar in modularity to that of the ACR. </div></div>

Compared to the JAE, how much of a weight savings will benefit your design? </div></div>

Considering how heavy the JAE is, and since my stock design is focused more on light weight with accuracy, If I do it right and minimize the thickness of the matierial in non critical areas I could see it being as much as 8-10oz lighter than an EBR stock, which I know you are familiar with H2OMAN. =P

Glass infused Teflon is a high heat, strong and durable material that would be milled similar to a piece of billet aluminum.

Ive been studying ways for the stock to offer the most mobility and highest accuracy at the lightest possible weight. So far the results look promising. I plan on having ventilation for the barrel as well as semi-free floating it. I've also been looking into making modular parts so that an operator would be able to modify the rifle depending on the mission, making the the weapon platform just that much more versatile.

I know I may be saying a lot but I believe everyone will take a different method to making something work for them, as most shooters do, and I would love to see other designs as well so why not?

 

[younggun22]

Re: Custom Polycarbonate M-14/ M-1A Stock

Interested to see where your project is going, this may or may not help. Might wanna get in contact with this guy.

http://www.milsurps.com/showthread.php?t=20978

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: younggun22</div><div class="ubbcode-body">Interested to see where your project is going, this may or may not help. Might wanna get in contact with this guy.

http://www.milsurps.com/showthread.php?t=20978
</div></div>

Thanks I really appreciate it!

 

[Retoocs]

Re: Custom Polycarbonate M-14/ M-1A Stock

Have you actually priced out how much a block of glass filled teflon big enough to machine a stock will cost you? I can tell you that it will be more than the cost of the rifle.

The drawings/TDP are controlled ITAR documents. If you are planning to do business, you will need to acquire the documents legally through FOIA request with the Army Materiel Command.

Having looked at the drawings, I can tell you they will drive anyone nuts since a lot of dimensions are not there. It's worse than dealing with Boeing drawings.

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Retoocs</div><div class="ubbcode-body">Have you actually priced out how much a block of glass filled teflon big enough to machine a stock will cost you? I can tell you that it will be more than the cost of the rifle.

The drawings/TDP are controlled ITAR documents. If you are planning to do business, you will need to acquire the documents legally through FOIA request with the Army Materiel Command.

Having looked at the drawings, I can tell you they will drive anyone nuts since a lot of dimensions are not there. It's worse than dealing with Boeing drawings.
</div></div>

Glass Impregnated PTFE is actually not too bad on price, although I would probably make the prototype out of metal, the final design would be a polycarbonate, not nessesarily GI-PTFE. The real problem is finding the right one. GI-PTFE is really good in this kind of application with heat and other stresses and can be milled, which is why I chose it first. However there are many other resins that could be injection molded. Thereby making things a lot cheaper. Compared to other options, the price to make the stock, as well as to possibly sell it, would be a drop in the perverbial bucket.

I was able to get my hands on a synthetic standard stock, so I will be able to take measurements from it to help me in my design process.

 

[MK14 SEI]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DocJekyll</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: H2O MAN</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DocJekyll</div><div class="ubbcode-body">... polycarbonate like glass infused teflon similar in modularity to that of the ACR. </div></div>

Compared to the JAE, how much of a weight savings will benefit your design? </div></div>

Considering how heavy the JAE is, and since my stock design is focused more on light weight with accuracy, If I do it right and minimize the thickness of the matierial in non critical areas I could see it being as much as 8-10oz lighter than an EBR stock, which I know you are familiar with H2OMAN. =P</div></div>

8-10oz lighter than the Mod 0 EBR stock like the one in my signature?

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: H2O MAN</div><div class="ubbcode-body">

8-10oz lighter than the Mod 0 EBR stock like the one in my signature?</div></div>

Indeed, and my goal is to also see what I can do about the balance of the system since I do know that the EBR stock can be a bit front heavy.

 

[MK14 SEI]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DocJekyll</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: H2O MAN</div><div class="ubbcode-body">

8-10oz lighter than the Mod 0 EBR stock like the one in my signature?</div></div>

Indeed, and my goal is to also see what I can do about the balance of the system since I do know that the EBR stock can be a bit front heavy. </div></div>

OK, but it would still be more than a pound heavier than the SAGE EBR with the receiver extension tube.

I'm not knocking your idea, just pointing out the weight differences.

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: H2O MAN</div><div class="ubbcode-body">

OK, but it would still be more than a pound heavier than the SAGE EBR with the receiver extension tube.

I'm not knocking your idea, just pointing out the weight differences.</div></div>

Oh its ok, I welcome <span style="font-style: italic">constructive</span> criticism.

I definitely see where you are coming from. Using an Al chassis system made it able to be much thinner and thus lighter. Im going to see if it is possible construct it in a way that would be lighter though.

Using the specific gravity of the matierial, I was able to calculate that the weight of the entire solid block before any milling was done would weigh approx. 17.539lbs. Now this may seem like a lot but when you consider that it is a solid block, and from what im currently looking at, the finished piece could be closer to 80% lighter than that solid block. The finished stock would run close to 3.5lbs.

If you look at a JAE stock, its pretty thick, and uses metal in areas that need extra support. Im going to try to eliminate that need. Right now Im playing around with the design. Things could change a lot between now and when I get it milled from the CNC machine.

 

[Bugs Bunny]

Re: Custom Polycarbonate M-14/ M-1A Stock

Be sure to post pics

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bugs Bunny</div><div class="ubbcode-body">Be sure to post pics
</div></div>

Here is a concept sketch I did, taking many ideas from a couple different rifles. Just one note, some of the features may or may not be on this rifle. Im just looking for ideas.

This is my progress so far in the CAD program. It looks simple, but all of the measurements for the receiver and trigger assemblies have been made and now comes the fun part of designing the ergonomics of the stock, and adding and removing what I want.

 

[GGGN]

Re: Custom Polycarbonate M-14/ M-1A Stock

interesting looking forward to your final product looks.

 

[MK14 SEI]

Re: Custom Polycarbonate M-14/ M-1A Stock

Mod 1 with Magpul CTR. The op rod guide block and screws are tucked inside the forearm.

1.90508795 kilograms

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: H2O MAN</div><div class="ubbcode-body">Mod 1 with Magpul CTR. The op rod guide block and screws are tucked inside the forearm.

1.90508795 kilograms
</div></div>

Outstanding, that will make for some good comparisons.

 

[DocJekyll]

Re: Custom Polycarbonate M-14/ M-1A Stock

Thought I would include another little update. I am making progress, and at this stage I would say it is about 23% done. Still have a lot to do, but since Ive made this a public design, I figured I would tease you with another picture.

[/URL]

As you can see, Ive started assembling pieces so that I can get a better understanding of what Im modifying. Still tons to do but its looking better. Any opinions?