Sylvan Arms CZ Folding Stock Adapter, Black CZS100-V2 The Sylvan Arms CZ Folding Stock Adapter allows you to fold your stock to the right" making your firearm shorter and more maneuverable in tight spaces. A folded stock can make transport or storage easier as well. The CZ Folding Stock Adapter comes assembled and ready for easy installation. Machined from B390 aluminum it is lightweight" strong" and very durable.