The Fortis Super Sport (SS) FIFTY was engineered with a relentless focus on innovation, intention, and quality. Ditching the common socket and Torx screws found on most AR safety selectors, we designed the patent-pending RidgeKey locking mechanism. This system creates a solid point of contact, securely locking the levers onto the selector core and eliminating weak points. The selector core is finished with a black nitride coating for superior wear resistance and a smoother feel. With the SS FIFTY, you'll never have to worry about a screw backing out, breaking, or snapping, giving you unmatched reliability when it matters most. Ambidextrous 6061 T6 Aluminum selector levers Cutout design to see the core 4140 Steel selector core coated in black nitride and optional as TiN Medium length for optimum performance Built in 50 and 90 degree options Robust RidgeKey locking mechanism with no visible screws