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Discussion Starter · #1 ·
The rear trunnion stock mount holes do not line up with the holes in the stock (moves the stock away from the receiver). Has anyone had to fill the plastic stock hole and redrill? My stock is the Russian Plum Polymer (plastic) Stock Set. I've repaired wood stocks with this problem but never the polymer (plastic). I'm just hoping that someone has an idea to help me with this problem.

I've been thinking of Accraglass or JB Weld but I'm not sure if either will hold to the plastic.
 

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It's a jagged hole in the plastic, so epoxy will hold just fine. You can thin it down a little with lacquer thinner to get it to flow into the hole. Once dry, it should drill like virgin plastic.
 

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Discussion Starter · #3 ·
Rhino_66 said:
It's a jagged hole in the plastic, so epoxy will hold just fine. You can thin it down a little with lacquer thinner to get it to flow into the hole. Once dry, it should drill like virgin plastic.

Do you have any preference as to what epoxy would work better for this application?
 

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Master Endmill Breaker
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If you're used to repairing wooden stocks, this is easy.

Any halfway decent 2-part epoxy from the hardware store should be good enough. You will probably find brands like 3M, Devcon, Duro, and the "house brand".

Look for the liquid epoxy in the combo syringe. Gel type epoxy also uses this package, so read the label. A lot of info as to the workability of the epoxy is on the package. Some of the glues are better suited to drilling, sanding, cutting, etc.

Avoid the stuff that is the consistency of toothpaste. It usually comes in 2 tubes or cans. It will be difficult to fill the screw holes with the paste. This can be thinned with lacquer thinner, but the liquid is easier.

If you have an additional syringe, you can inject the epoxy into the hole and fill it from the bottom.

Accraglass bedding epoxy should be thin enough to run down into the screw holes if you drip it in a little at a time. A couple drops of lacquer thinner can make it run, but too much will make it more like a varnish. It will still dry in the screw hole if it's watery, but may take longer to cure properly. It may shrink from the evaporation of the solvent.

You could also pack the screw hole with plastic shavings or baking power and fill it up with cyanoacrylate adhesive (super glue). This would be quick and easily redrilled.
 

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Some epoxys will eat up plastic so try a little dab somewhere that isnt seen first.
 

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Some epoxys will eat up plastic so try a little dab somewhere that isnt seen first.
 

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Discussion Starter · #7 ·
I used Brownell's "AcraGlas Gell", just filled the hole and let it cure. Turned out great.
 
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