i'd get rid of those in red. if you get something other than a spur hammer, you will need a new beavertail. SA uses a different beavertail cut (.220" vs .250"). i think S&A are the only ones that have drop-in beavertails with this cut. getting a new hammer, you might as well buy a trigger kit to your liking, which will clean up the trigger pull trigger is your choice. i prefer flat triggers over curved trigger now. Get the Jerry Kuhnhausen manual and it should cover the parts that you want to install. Wanna kill these ads? We can help!