agreed the m14 functioned well; but the stock tended to warp due to the humidity; and the attempt to switch to a composite stock did not work as the new stock changed the balance of the weapon.
Wow - where'd that come from? I carried a wood stocked M-14 for 17 months in combat - including fording rivers, monsoon rains and at least one typhoon and warping was never an issue. My rifle always hit what I aimed at; that's why I kept it.
I never heard anybody complain about "warping" with either the birch or the walnut stock.
I never wanted or carried the fiberglass stock because it was a heavy pig. The government only went to fiberglass to save money because hardwood was getting too expensive to find and maintain.