In the creation of the Fortis Super Lean Sport (SLS) FIFTY attention to innovation purpose and quality is clearly evident in every detail of its design. Unlike most AR safety selectors available today that use conventional socket or torx screws the Fortis SLS FIFTY features the patent-pending RidgeKey locking mechanism. This advanced system enables the levers to firmly attach to the selector core ensuring a solid point of contact and eliminating any potential weak areas. The selector core is treated with a black nitride coating enhancing surface smoothness and providing excellent wear resistance. Concerns about screws loosening breaking or snapping are no longer an issue with the Fortis SLS FIFTY. It boasts ambidextrous 6061 T6 Aluminum selector levers a distinct cutout design for visibility of the core and a 4140 Steel selector core with black nitride and optional TiN coatings. The medium-length design ensures optimal performance complemented by built-in 50 and 90-degree options. The sturdy RidgeKey locking mechanism includes no visible screws maintaining a sleek and secure structure.