Gunsmithing Marine-Tex

Die grinder or dremel very carefully. I would suggest bedding the new action to it to get a good exact fit after grinding on it. I’ve done several of my own. While it’s nerve racking, I haven’t had one yet that didn’t end with good results when re-bedded. I’ve always used devcon but believe marine-Tex would be just as good
 
I third that method... Marine-tex is tough stuff. Mechanical removal is the only method I know of that won't damage the rest of the stock.

I have used chemical strippers to remove the stuff from wood before (on boats), but if the stock has anything composite on it, it will at the minimum stain it, and at the worst dissolve it... It will also stain the aluminum anodizing on the chassis... so be careful if you choose to try that method.
 
I think what you might be hinting at is whether or not it can be removed with a solvent or heat. The answer is no, you're going to have to grind or sand it out as others have mentioned. There's no solvent or way to heat it and remove marine tex that isn't going to damage the stock too. Marine Tex is good stuff, which is why it's hard to remove. Don't be afraid to grind on it though, just go slow and be judicious. Rebedding it will fix most errors made removing the old stuff.
 
Grind and then sand slowly till you see metal or chassis. You don't really want layers on layers if you can avoid it. If it is really thick and otherwise solid, make sure it is rough so the new epoxy bonds well.
 
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