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Here's the gun stock.
Remove these parts with a pair of locking pliers.
You should now have this.
Here are the internals.
You won't need these pieces, so thrown them out or put them in your scrap box.
Gut the internals. You should be left with this.
Take this piece, and remove the rubber with a flat head screwdriver, knife etc.
If you did it correctly you should get this.
Take the same piece and bore it out with a 3/8" drill bit
You should now have this.
Now, cut a 1.25" piece of CPVC.
Goop the CPVC into a coupler.
Now, wrap the CPVC in electrical tape until it fits this piece flush.
Add some craft foam to the back of the piece that we drilled out earlier for padding. Then, smear some JB welb on top of it.
