The Single Folder utilizes the same arm and modular stock/stabilizer end pieces as the Strike Dual Folding Stabilizer. What's new is that it has a strengthened hinge made out of steel, instead of aluminum, making it extremely rigid and robust. The fitment is also perfect with little to no play when extended and folded. This folder only folds to a single side but can do so at anytime without any reconfiguration or use of a button.