RE: Ruger 10/22
I've done upgrades to 2 different 10/22's. the first I used a Fajen thumbhole stock in a two tone gray laminate and a Butler Creek composite bull barrel. I used Power Custom internal parts.
The second project I used a Fajen thumbhole stock in red/white and blue laminate added an Adams and Bennet bull barrel and this time used Volquartsen internal parts. Got the trigger to around 2lbs.
Both rifles shot 1/2 inch groups at 50 yards easily.
You can get alot of money wrapped up in them in a hurry, but it's worth the result.