M*carbo trigger spring kit
M*carbo flat trigger
M*carbo 20lb recoil spring with metal guide rod.
And a S&W 5900 mag with 10% extra power Wolff mag springs. And I gotta say it’s performance has changed for the better. It dumps mags with ease and the trigger pull is much lighter with a much better trigger feel. Anyone here done anything similar to their P-11/P-40?