Has anyone ever changed out the ILS mainspring housing on a Springer? Is it as simple as getting a new MS housing and using the original internals? Will I need new internal parts as well as the housing? I know I can leave the original piece in and just not use it but I would like to make it more like the original 1911 design and not need to capture the spring when removing, and keeping a key that I will never use. Does anyone know what firing pin spring is used in the Springfields that use the titanium firing pin that I believe is actually from a .38 super??? I like to use a stronger than stock firing pin spring in my 1911's and I know these are not the normal 45 springs and firing pins. Any help would be appreciated.