Using a brass punch, slowly knock out the main housing spring pin.

Make sure the hammer is forward and not pulled back! The spring in the main housing provided pressure for the hammer. Your punch will be difficult to remove and the main housing can fly off when you pull the punch out if the hammer is pulled back.

Remove the main housing to reveil the Sear/Trigger/Grip Safety spring (This is a flat leaf spring so no worries about parts flying everywhere). It will just fall out or shake it out (tweezers not needed, just used to show spring placment).