Zach Savage, who is a member on BE runs wwwlastroundarmament.com . He has the stainless steel version in stock. https://www.lastroundarmament.com/product/stainless-steel-roll-pin-for-eaa-ambi-safety/
I dont know of any shooter production or otherwise that flicks on their safety between shooting positions. Everyone that I've witnessed just takes their finger off the trigger.