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Posted: 2/24/2026 10:28:46 AM EDT
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Traded into a surplus M14 Fiberglass stock yesterday. I don't know anything about these. Seems like it has a layer of paint over the Fiberglass, lots of scuffs but no major cracks. This one is missing the buttpad and rear hardware. Can someone point me in the right direction and let me know what parts I need to finish this out? Also, I read about stiffening the forearm, are there instructions or a kit to do that? I wasn't able to find any posts here about the Fiberglass stocks. Thanks!    
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ages ago I got one from Fred's filled in the selector cutout area and repainted. great all around beater stock you don't have to worry about. I just took the metal off the wood stock |
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Originally Posted By RED_5: ages ago I got one from Fred's filled in the selector cutout area and repainted. great all around beater stock you don't have to worry about. I just took the metal off the wood stock At one time I had 5 of these from Fred's. They were cheap enough to have them in different colors/camo schemes.  They are great for beater hunting stocks. You stiffen the stock with Acraglass. Pretty much a waste of time unless you looking for a serious match rifle. |
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I think I have a black one off a socom somewhere. If I read it correctly, they dont require the internal metal? I put wood on it as I love that look. |
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Proud Member of the Leather Head Mafia
“In my opinion, the M1 Rifle is the greatest battle implement ever devised” - George S. Patton
LETS GO REDWINGS!!!
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Originally Posted By HurstXJ: The buttplate, sling swivel and swivel screw are the same as for a wood M14 stock (swivel and screw from an M1 Garand stock are the same). The upper screw and nut are unique to the fiberglass stock. Excellent. Thank you. Is there a recommendation on where to source those parts? |
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Originally Posted By -JC-: Excellent. Thank you. Is there a recommendation on where to source those parts? Unfortunately, my local source that had a web presence closed up shop and I'm afraid I don't have another recommendation. Looks like Fulton Armory has the upper screw, nut and clip. Lower screws and swivels are all over. Looks like Treeline and Numrich have buttplates. |
| Good stock. Little to no maintenance required. Does not warp when wet and is grippy. Total win. GI fiberglass is WAY better than the shitty SA black plastic stocks they send out….not even in the same league with lockup and fitment. Leave it or paint it to your liking. Like prior comment on the stiffening; not really needed unless you plan to really go into really tight groups and handloading. It was a GI stock and provided GI accuracy (2-4MOA). |
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Originally Posted By -JC-: Traded into a surplus M14 Fiberglass stock yesterday. I don't know anything about these. Seems like it has a layer of paint over the Fiberglass, lots of scuffs but no major cracks. This one is missing the buttpad and rear hardware. Can someone point me in the right direction and let me know what parts I need to finish this out? Also, I read about stiffening the forearm, are there instructions or a kit to do that? I wasn't able to find any posts here about the Fiberglass They are known for flexing and should be reinforced. Create an account over at M14forum.com. Member "Whipped Cream Head" can help you out. |
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I reinforced one of mine (my first one) with some kind of black 3M epoxy (my cousin worked for the state, and they used it to waterproof electrical connections). Anyway it stiffened it just fine, but noticeably increased the weight. Not like having a medium-weight barrel, but still noticeable. I prefer leaving the stock alone for a GI config rifle, but I liked hiking with mine in the forest, and I understand not everyone does stuff like that. The checkering on the fiberglass stock comes in handy when it’s raining. |
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Treeline is your friend for M14 stuff. https://www.treelinem14.com/ |
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Fulton has the hardware if you already have the butt plate. Treeline has the butt plate and hardware as well. https://www.treelinem14.com/Stock-Metal-Parts_c_11.html https://www.fulton-armory.com/product/butt-plate-screw-assembly-upper-for-usgi-fiberglass-stock-m14-m1a/ https://www.fulton-armory.com/product/butt-plate-nut-holder-for-usgi-fiberglass-stock-m14-m1a/ https://www.fulton-armory.com/product/butt-plate-screw-lower-m14-m1a-m1/ |
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Originally Posted By HurstXJ: The buttplate, sling swivel and swivel screw are the same as for a wood M14 stock (swivel and screw from an M1 Garand stock are the same). The upper screw and nut are unique to the fiberglass stock. Yep a very unique thread pitch. I was always told…..don’t lose that square nut in the fiberglas stock as there are no replacements. |
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Originally Posted By KitBuilder: I reinforced one of mine (my first one) with some kind of black 3M epoxy (my cousin worked for the state, and they used it to waterproof electrical connections). Anyway it stiffened it just fine, but noticeably increased the weight. Not like having a medium-weight barrel, but still noticeable. I prefer leaving the stock alone for a GI config rifle, but I liked hiking with mine in the forest, and I understand not everyone does stuff like that. The checkering on the fiberglass stock comes in handy when it’s raining. I’m considering taking one of my less than perfect GI fiberglass spares and reconfiguring the butt for a M1 garand buttplate. Nips a little weight and I found through the years I never use the flip up rest in the M14. Alternatively I could just take the steel shoulder rest off the gun. Either way cuts almost a 1/4” of LoP. I just cleaned one of them up for a future paint job. I have always wanted a olive green and sand or red clay color camo pattern. |
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| I used Marine-Tex epoxy to fill the selector cutout and stiffened the forearm with carbon fiber rods and more Marine-Tex. Worked great. |
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