Seems like a lot of people detest ambidextrous safeties, and manufacturers are offering fewer and fewer models that include them. But if you are left-handed, there aren’t a lot of alternatives other than compromised operation or emptying a bank account to buy a Cabot Southpaw.
New Wilson Combat Extended Thumb Safety. Part number #6BN. Blue, narrow thumb pad. It has never touched a gun. I purchased for a competition gun not realizing it was a narrow pad.
$25 shipped first class US.