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Home made lightweight adjustable stock

This is a discussion on Home made lightweight adjustable stock within the Modern M14 forums, part of the M14 M1A Forum category; A friend of mine did a modification of his SOCOM's stock and I thought that it might interest some of you. His objective was to ...


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Old June 17th, 2012, 01:08 PM   #1
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Home made lightweight adjustable stock

A friend of mine did a modification of his SOCOM's stock and I thought that it might interest some of you.

His objective was to add an adjustable butt piece and a hand grip. He used an old fiberglass stock as the base and an ATI pistol grip stock. I've shot the rifle and it really is well made. There is no unusual movement or feel, it's quick to point and lightweight.

Here is his how-to description with pictures.


Here's some pics of that stock build. It was pretty easy, and has proven to be durable - and inexpensive to build.

This is just checking the angle of the "interface" - I spent a decent amount of time looking for a stock that I thought would work, and the ATI shotgun stock seemed perfect:


If I was to do this again, I'd make the cut about 1/4"-3/8" further down the grip toward the buttstock to give a little more range to the grip....


Another reason to make the cut further down is that there is a steel pin running through the neck - and I happened to cut it in half - which made my blade unhappy.


You can see the pin, and the filler of urethane foam that makes up the core of the stock....


Using an electric handpiece (dremel-like tool) I ground out the cavity and cleaned up the edges. You want to create a negative draft on the sides so that the filler is mechanically as well as chemically anchored, and also knock down any sharp edges to eliminate the possibility of creating stress risers.


The ATI stock snugged right up...


This is a test fit of the pistol grip - the area above the grip had to be knocked back a little to allow the trigger guard to swing open - but just a bit - and cutting further back would have fixed this....


I drilled a hole through the bulkhead of the back plane of the stock to hold a bolt that would hold the stock tight while the Magic-Sculpt cured.


Naphtha mixed with Vaseline makes a great parting compound - this was painted liberally all over the cavity inside the mating surface of the ATI stock AND THE BOLT to keep the Magic-Sculpt resin from sticking during the cure


Magic Scuplt is a two-part epoxy clay resin. It cures extremely hard and tough. I mixed in some chopped fiberglass to add to it's strength, but I don't know if that's necessary (it is very durable material). You could use a mixture of chopped glass and fiberglass resin as well, it would just be a little messier to deal with - I used what I had.




The cavity inside the stock and the cavity inside the new buttstock was filled with the epoxy sculpt mixture, and a bolt with a nut was tightened to hold it all together for the cure. Excess material is removed while in the clay-like state - since later it would be a LOT harder to get off.


Actually, I didn't have the right nut for the bolt - so I used a wood insert here - but it's just to hold it all together during the cure....


Once cured, you can see the fidelity of the impression - the Epoxy Sculpt made a perfect "key" to the buttstock's mating face - including serial number ;)


I filled the selector notch....


I fabricated a slightly wedge-shaped aluminum plate to sit against the bulkhead at the back of the stock - to reinforce the mounting point.


Plate mounted and drilled...

At this point it was a matter of sanding, filling, painting. The original paint was a lot more flat - and it was a bit too "dusty" so I painted it again (Duracoat). I'd like to have a bit more flat paint on it, but that'll have to wait - and at least it's really easy to give it a paintjob...




Lightweight, collapsible, convertible, comfortable - what's not to like?

Thanks from Deacon, GARRARD, geepee3 and 13 others
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Old June 17th, 2012, 01:17 PM   #2
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Nice

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Old June 17th, 2012, 01:19 PM   #3
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Very cool.....I did something very similar to mine.


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Old June 17th, 2012, 01:32 PM   #4
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Good work!!

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Old June 17th, 2012, 01:48 PM   #5
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That looks pretty darn good!
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Old June 17th, 2012, 02:13 PM   #6
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thats the best homemade I've seen.

does it need a cheek pad?

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Old June 17th, 2012, 02:37 PM   #7
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No cheek rest needed. I shot it just fine the way it was. I agree with his comment about making the cut a little longer but other than that it shouldered and aimed as well as any professional stock that I've ever tried. And he told me that it only cost about $100 for the supplies and parts.


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Originally Posted by Dredsen View Post
thats the best homemade I've seen.

does it need a cheek pad?

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Old June 17th, 2012, 02:47 PM   #8
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I like your conversion better than any I've seen so far!

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Old June 17th, 2012, 03:20 PM   #9
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you know there might be a fair penny in buying the VLTOR sage rear ends or actual sage rear ends and making them into stocks and selling them.

they are both the same angle as the rem 870 shotgun.

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Old June 17th, 2012, 05:35 PM   #10
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Great work and photo set, RAMMAC.
I have one of those beater stock in the corner of my room.
Your tutorial makes it look easy, even when I know it's not.
Thanks for taking the time to record the work for us.

Glenn

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Old June 17th, 2012, 07:06 PM   #11
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Very nice indeed

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Old June 17th, 2012, 07:55 PM   #12
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good job

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Old June 17th, 2012, 08:10 PM   #13
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I have a GI fiberglass stock laying around in my basement. This is a awfully tempting mod. It would make a "toss in the truck and go" stock.

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Old June 18th, 2012, 04:06 AM   #14
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Quote:
Originally Posted by RAMMAC View Post
.... If I was to do this again, I'd make the cut about 1/4"-3/8" further down the grip toward the buttstock to give a little more range to the grip.... Lightweight, collapsible, convertible, comfortable - what's not to like?
That's exactly what i found when doing the Homemade Mako Modstock.
Would have made it a tad longer down the grip. Excellent work by the way.

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Old June 18th, 2012, 04:26 PM   #15
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Great Job RAMMAC! I have to try this.

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