Chambers Custom rdsm plate. They do not do the work but have a select few smiths around the country they allow to provide the cut and plate install. I went this route with my 2020 iron sighted Staccato P. I had Dave Laubert from Defensice Creations do the cut and plate install. Highly recommend both the Chambers RDSM and Dave’s work. Communication was fantastic and turn around was like two weeks (2021 time frame).