Forward Controls Design 90Q AR Safety Selector Black. SF-90Q (Safety FCD 90 degrees throw) is a non-ambidextrous (single sided) reversible safety based on the ASF (Ambidextrous Safety FCD). SF-90Q features a 90 degrees throw and an offset lever. Since ASF's introduction in early 2020 it's become one of the most reliable compatible and popular AR15/M16 safeties. It isn't just one attribute but the combination of the smooth rotation positive detent engagement no-wobbling levers from tight tolerances Swiss CNC machined components and superior ergonomics. If there was one area customers have asked for and we've heretofore not addressed it is that not everyone wants an ambidextrous safety. ASF can be fitted with a cap on the side where the user doesn't want a lever but the cap costs even more to make than a lever a single lever ASF costs the same as an ASF with two levers. Economically a non-ambidextrous version of the ASF makes a great deal of sense for those that don't need or want to use an ambidextrous safety. Specifications for Forward Controls Design 90Q AR Safety Selector: Manufacturer: Forward Controls Design Color: Black Finish: Nitride Fabric/Material: 4140 Steel Features of Forward Controls Design 90Q AR Safety Selector Ergonomic levers maximize surface area and traction Conventional 90 degree throw with Q leve Lever attaches via robust roll pin Package Contents: Forward Controls Design 90Q AR Safety Selector FCD 17-4 PH stainless steel nitrided detent 4 roll pins Safety/ejector spring Forward Controls Design SF-90Q: 90Q AR Safety Selector Black