I got a nice reply from Ruger CSR and she told me that all of the current 22/45 Lites, except the black fluted model, come with the rail installed but the screws are not lock tited . I am going to unscrew my screws ,clean them and blue lock tite them and the front sight screw down.
I had wanted the silver 22/45 that looked like a Tek 9 but the wholesaler substituted the green model because they were out of the silver model and it is now out of production. Not sure I was happy about that but the dark green one looks good and unique.
Part two of the 22/45 question. Do you lock tite the barrel thread/muzzle protector to keep it from loosening . Or do you just finger tight it against the O ring and shoot it. My last 22/45 ,first issue bronze/green, would walk it's groups as it warmed up . Comments please.