fugedaboutit -
Do not use the old thumb safety as a guide. Fit the new safety to the sear. Remove the grip safety so you can see exactly how the new thumb safety fits in relation to the sear. With a dremmel and fine sanding wheel or jewlers files you can take off enough metal from the safety cam so that it contacts the back of the sear and will not let it travel rearward when the trigger is pulled. The cam on the new thumb safety may not be the exact dimension as the old one thus the need to custome fit to your gun.
You will have to either replace the hammer and sear pins or do what I normally do and that is to grind off enough of the pin so that it fits flush with the frame. Sand the end smooth and re-blue or if the pins are stainless you can take a wire wheel on a dremmel and finish so they look like your frame. The pins will be covered when the safety is off but will show slightly when the safety is snicked on.
MadDog
Do not use the old thumb safety as a guide. Fit the new safety to the sear. Remove the grip safety so you can see exactly how the new thumb safety fits in relation to the sear. With a dremmel and fine sanding wheel or jewlers files you can take off enough metal from the safety cam so that it contacts the back of the sear and will not let it travel rearward when the trigger is pulled. The cam on the new thumb safety may not be the exact dimension as the old one thus the need to custome fit to your gun.
You will have to either replace the hammer and sear pins or do what I normally do and that is to grind off enough of the pin so that it fits flush with the frame. Sand the end smooth and re-blue or if the pins are stainless you can take a wire wheel on a dremmel and finish so they look like your frame. The pins will be covered when the safety is off but will show slightly when the safety is snicked on.
MadDog