Contact Ruger Customer Service through their website.
Depends on the store.
50-225 usd
About 200 USD
Yes, Ruger made them
50-200
Ruger.
I make them and other 10/22 style stocks. I have one almost finished(pistachio wood)
50-200 or so
Ruger's web site has extensive sn data.
Depends on what caused the jam.
75-300
Check the receiver and barrel