The most you'll need is a good stone to remove any evidence of burring - stay away from using any power tools.
This is a simple, cheap fix if you do it yourself - since a lot of folks who claim to be doing action jobs with 'special springs' are using Wolff Spring Kits from Brownell's.
Ruger products are built like a tank - little 'fitting' is necessary, as most all accessories are drop-in.
Before you do any of this - try an even simpler fix - clean it 'thoroughly' - check for any high spots or evidence of burring and wear - stone until smooth, but no more than that - and reassemble with a 'good' lube like 'Pro-Gold' on all bearing surfaces.
You may find that the effort paid off well.
Good Luck.
Vaya,
Scouts Out!