Fortis LE LW Enhanced End Plate System K1 Tapered AR-15 FDE

When designing the Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With the two lockdown systems (K1 & K2), they engineered a solution to install the castle nut onto the end plate that is not only robust, but also stands true to the Fortis brand of innovation and ingenuity. The K1 system features a tapered castle nut that seals itself onto the end plate. This ultra precision snug fit