Minilmalist Marauder P Stock 2.1 Updated

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Looks great man. I have a concept for one using 2 pieces of carbon tubing, one fitting inside the other so you can go from 9-13"~ of pull or so, there would be a knurled thumb screw on the bottom outer tube and the inner would have slots that require loosening of the thumb screw and a quarter turn of the outer tube for adjustment, the design could be made to keep the look very sleek like it is currently I think.



|_____|_____|_____| each | being one of the locked positions.



Having the two washers contoured to the tubing on the outside and inside would provide enough rigidity I think once secured.



Just sharing the idea because I love having a wide range of adjustment on length of pull for going from prone to off hand shooting. I am sure you could pull it off with your current design too using a castle nut. 


 
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I think while a thumb screw would be quick to implement, I would be concerned about the threads in the carbon or aluminum tubing wearing out over time unless a steel insert was pressed in. I have thought about a way to have quick adjustment still fit with the current design. The part that connects the buttplate to the stock would have notches cut instead of being fully threaded and a small housing to hold a spring loaded button which will also serve as a lock.
 
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The devil is always in the details. The thumb screw adjustment method wouldn't have threading into the carbon fiber for that part, only the adjacent washers would have threading along with the thumb screw, but to connect a carbon tube to a folding adapter a metal threaded insert or the tube pressed in and adhered would suffice. Either way, I think achieving around 4-5" of LOP adjustment and as you are already thinking a 'quick' adjustment on the butt plate height, you'd be set.



I think a slightly thicker buttpad wouldn't hurt except for weight/material cost, a silicone/rubberize outer casing would be both ergonomic and probably sleek looking, along with an optional/removable 3-4" sleeve to run along the tube for a cheek wield that you can adjust so you're not pressing your face against a potentially frozen tube in the colder months, provided you stick with aluminum. I don't think carbon fiber or a synthetic would have that issue :)
 
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I have looked at the moldable rubber kits on amazon to gauge what is available to the home gamer. That could be a possibility after gaining some experience with it and find something that is durable and cost effective. I think that the talon grips material would work really well for adding traction to the buttplate with out adding bulk. https://www.amazon.com/TALON-998R-Grips-Rubber-Black-7-Inch/dp/B01FLQO5IU/ref=pd_sim_229_1/132-9580094-8023159?_encoding=UTF8&pd_rd_i=B01FLQO5IU&pd_rd_r=88cd4509-30d2-11e9-a3ae-8ba2ee50221e&pd_rd_w=WYlTN&pd_rd_wg=Why2O&pf_rd_p=90485860-83e9-4fd9-b838-b28a9b7fda30&pf_rd_r=K4MM45QJKQB89MW2Q51W&psc=1&refRID=K4MM45QJKQB89MW2Q51W 

Actually I just picked up some thin foam pads with a sticky back for the cheek rest to provide insulation and comfort. I am waiting to anodize before I put it on. I am going to machine the profile so it looks good. I agree that it definitely needs something there between the metal and your face to keep it from freezing. From my initial testing with sight alignment with the current 1-4 scope and my 3-12 athlon scope on medium rings, getting the sight picture felt natural going from resting to shouldering potions. This is with the LOP adjusted in the shortest position. I'm 5-11 so it may very with taller guys.
 
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In a version I have built in my head, I use something like this for the butt pad, and a treated wood or synthetic for the interior/plate to keep weight down. I love metal working but its one of the heavier elements on earth. I opt for carbon/wood/synthetic when applicable provided its not overly dependent on tensile strength like the HPA Tube, or components like the hinge/latch/fastener/ect..

https://www.amazon.com/SNIPER-Ribbed-Stealth-Rubber-Position/dp/B00LU8CN1K/ref=sr_1_29?keywords=slip+on+recoil+pad&qid=1550209460&s=sporting-goods&sr=1-29


I find myself using the butt plate as a grip in many shooting positions(for instance to adjust elevation in prone), and when its only 1/4-1/2" thick, its not the most ergonomic but its not a make or break either..



A slip on silicone could be molded and fit in such a way that holds 1-2 magazines fairly universally by having a squeeze fit. Making a mold for a silicone/soft rubber pour shouldn't be terribly difficult, achieving consistency may be? I think an upside down tear drop kind of design where the bottom has a slot for say 2 magazines (or hand warmers, or a few small tools) would be great functionally and aesthetically.. the magazines would be held by squeeze in the slot. The more universal you make the parts, the more models a product like this can apply to with minor changes..the primary one being the hinge adapter, isolate that piece from the rest of the design so it can be manufactured for many models with 1 simple design change. One could stock the other parts an then simply make the hinges/adapters to order or minimal.



-Matt


 
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In a version I have built in my head, I use something like this for the butt pad, and a treated wood or synthetic for the interior/plate to keep weight down. I love metal working but its one of the heavier elements on earth. I opt for carbon/wood/synthetic when applicable provided its not overly dependent on tensile strength like the HPA Tube, or components like the hinge/latch/fastener/ect..

https://www.amazon.com/SNIPER-Ribbed-Stealth-Rubber-Position/dp/B00LU8CN1K/ref=sr_1_29?keywords=slip+on+recoil+pad&qid=1550209460&s=sporting-goods&sr=1-29


I find myself using the butt plate as a grip in many shooting positions(for instance to adjust elevation in prone), and when its only 1/4-1/2" thick, its not the most ergonomic but its not a make or break either..



A slip on silicone could be molded and fit in such a way that holds 1-2 magazines fairly universally by having a squeeze fit. Making a mold for a silicone/soft rubber pour shouldn't be terribly difficult, achieving consistency may be? I think an upside down tear drop kind of design where the bottom has a slot for say 2 magazines (or hand warmers, or a few small tools) would be great functionally and aesthetically.. the magazines would be held by squeeze in the slot. The more universal you make the parts, the more models a product like this can apply to with minor changes..the primary one being the hinge adapter, isolate that piece from the rest of the design so it can be manufactured for many models with 1 simple design change. One could stock the other parts an then simply make the hinges/adapters to order or minimal.



-Matt

Click to expand...


A mag holder for the inside of the plate is a good a idea. I am researching DIY injection molding machines which would offer a higher quality part than 3d printing on the small scale. The beauty in the current design is that the stock tube threads into the folding mount which offers lots of possibilities off attaching different stocks such as an AR stock via screw on adapter for the buffer tube. 
 
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1553145694_4774167035c931f5ea0e308.21437528_20190319_151256.jpg
1553145727_8159399175c931f7f56cc78.86060698_20190319_151226.jpg




Back to the drawling board, I redesigned the folding mechanism and eliminated the button and the stock now self locks in both the open and closed potion. I made a custom tapered keyseat cutter with tappers on both sides to form the locking faces that sits under spring pressure. I am using a self adhesive foam sheet for the cheek rest which is both comfortable and keeps my face from contacting bare metal.
 
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