[McTool]

I too went for the stainless dome head screws , washers and nyloc nuts . I used a dremel cut off wheel to slice down the side of the old nuts which made them easy to remove . You either have to take your time or dribble a bit of water in there coz you dont want the plastic melting from the heat of grinding the nuts . I use a smear of copperslip grease on all the fender bolt/nut threads.

 

[McTool]

Had a friend ruined a brand new (faulty )stainless Ruger rifle . It was a bit short on head space and when he closed the bolt for the 1st time it galled up the locking lugs .
Opinion .......I have bought 3 new Ruger rifles .........Never again😠