The Maglula Loader/Unloader is simple to use in either loading or unloading mode. The loader/unloader eliminates thumb pain, wear on feed lips, and prolongs magazine life. It is crafted from durable reinforced polymer, lightweight, and is reliable in all weather. This model is compatible with CZ Scorpion EVO-3 9mm polymer magazines. Fits Scorpion 9mm-type polymer magazines Ver #1 & Ver #2. Simple to use in either mode Eliminates thumb pain and injury Eliminates wear on feed lips Prolongs magazine life Lightweight and fits in pocket Reliable in all weather Durable reinforced polymer