question about modifying a synthetic stock

[robcoe]

Does anyone have any tips on how to join 2 different pieces of synthetic stock material together so that the joint will hold up to some abuse?

What I am planning to do is get a mosin nagant aftermarket stock, remove as much from behind the trigger as I can and add a pistol grip and a folding stock(this is not the end of the modifications, but everything else either I know how to do or will be done by a gunsmith)

A.y tips on how to make a joint like that last would be appreciated. Wood I know how to work with but this is new territory for me.

[SJgunguy24]

Fiberglass on the outside, metal rods with epoxy to mate everything. That's how I would do it unless you know exactly what the composition of the plastic and find the right filler rod and ployweld it.