There's a fellow out there, moniker Different, who had an article on the web (I found it through m14.ca) on how to do it. Doesn't seem difficult, maybe fussy? Whatever.
A question, really for Hungry; word on the street, you're not so find of the chu wood stocks, including for bedding; whats the concern?
I'm here fer all of you M14 newbs!
Now remember that I'm a match shooter/competitor. I ain't a collector or a historian, I just happen to tweak my own match rifles since I ain't sponsored and I don't have access to a shooting team armorer like the National levels soldiers I have shot against at the DCRA's NSCC/CFSAC that used to be shot concurrently back in the 1990's and early 2K years. So when I tweak a rifle, I want it to shoot well. The chu wood stocks don't lend themselves to this need. They are great for zombie defense or bear defense or moose or elk or deer or mountain lions/ cougars... well in the mountains and not in the bars. So the Chu wood does have a great role in keeping you warm by tossing it in the fire... just strip off all the metal work. LOL
The mystery Chu wood is soft... can we all agree? The M14 rifle platform depends upon trigger guard clamping and hence compression to keep all the components together and shooting (consistency is what you need for a tight PR or NM rifle) small / tight groups.
The Chu wood being soft is ALWAYS going to be stressed or compressed and after several years and coats of oil the trigger guard rattles around (seen this happen to many M1 Garands and USGI M14 stocks).
ENTER the USGI glass stock... total everything-proof. Even tough enough to beat the zombies over the head with this rifle stock! Now the match shooter WILL have consistent clamping repeatability when re-assembling your NM rifle or PR (read : sniper rig). No more sketchy clamping issues and hence no longer any doubts about how your rifle is gonna perform after you shoot a clean 50 points out of 50 and now you have to do a tie-shoot-off with another national level competitor.

I've been there with shooting possible scores of 50 points in Canadian Service Rifle at the National level, it's tense but loads of fun!
ENTER the McMillan M1A NM (national Match) Phat Bastard stock, super stiff and super strong. Not a single doubt in your mind when you have to make that shot. The entire glassed in rifle vibrates like ONE steel rod and the flash suppressor pings everytime to 'rack' that op rod!

Pure sweetness and joy!
Life does not get better! Want your rifle to PINGGgggg like mine?
Cheers,
Barney