May as well throw in my 2 cents. First of all the M14 was designed as a battle rifle and not meant to be purty. It's only the last 15 years or so where gung ho guys have decided to trick them out. Hey, I jumped on the bandwagon 7 years ago and have had the dubious pleasure of tricking out many.
In it's heyday, the M14 was a killing machine sitting in a hardwood stock. Most notably walnut, but birch, maple, ash and others were used. It wasn't until the early to mid 60s that a fiberglass stock was even thought of. Why? Because the wood stock was deemed too heavy to pack around in the bush.
A battle rifle itself doesn't depend on accuracy of fire. It depends more on volume at a sustained rate of fire on a perceived target.
It wasn't until the M14 outshot the M1 Garand in service rifle matches did a truly tuned M14 make the pages of US service rifle history.
You want a tight Norinco, you can use a synthetic or bed a USGI walnut or birch stock. I have both and score the same with both. I also have a 6 year old bedded chu wood that comes pretty close.