The new Taurus GX4 T.O.R.O. 9mm pistol adopts the Taurus Optic Ready Option mounting system, which facilitates mounting of several popular micro red-dot sights. The T.O.R.O. system is designed around a factory optic-cut slide for those who desire the advantages of a low-print EDC handgun and the confident sight picture of a red dot. The GX4 T.O.R.O. also comes with a flush-mount slide cover plate for use with the non-optic option. The mounting pattern covers the following optic models: