Yes. Z-RAM offers a Foldable Shoulder Stock for the Huben GK1. Its integrated mechanism folds the stock sideways along the body, and it connects through the separately sold Z-RAM GK1 Buttstock Adapter. The adapter’s specified base is the Huben GK1 EU version.
What the folding function changes
The folding mechanism belongs to the stock itself. It gives you a shoulder-support arrangement when extended and a more compact arrangement beside the body when folded. Z-RAM describes that compact form as useful for storage and transport.
The stock is listed at approximately 280 g, with dimensions of approximately 200 × 100 mm (length × height). Those are the stock’s product specifications, not the total weight or folded transport dimensions of an assembled GK1. They describe the part you are adding; they do not establish whether a complete equipped GK1 will fit a particular case.
The adapter provides the connection
The stock’s description makes the Z-RAM GK1 Buttstock Adapter a required component, not an optional appearance accessory. If you do not already have that adapter, the stock purchase alone does not provide the specified connection.
The adapter also lets the rear sight remain in place. Its description names compatibility with Z-RAM’s GK1 Picatinny and Red Dot Sight Mount rails, so the shoulder-stock choice can coexist with those named sight-mount options. That is a useful distinction from the folding function: the adapter connects the stock to the GK1, while the stock supplies the hinge and shoulder support.
The folding stock and its required connection

Huben GK1 shoulder stock black anodized aluminum foldable for additional Picatinny rails
The actual sideways-folding shoulder stock for the Huben GK1. Black-anodized aluminum, approximately 280 g and 200 × 100 mm; requires the separately sold GK1 adapter.
View the foldable stock
Buttstock Adapter | CNC ALU | black anodized | Huben GK1
The required stock-connection adapter for the Huben GK1 EU version. It retains the rear sight and works with the named GK1 Picatinny and Red Dot Sight Mount rails.
View the required GK1 adapterExplore Z-RAM’s shop categories
This brief own shop tour introduces Z-RAM’s main product categories. It is a general introduction to the range, separate from the GK1 stock’s folding function.
▶ Play on YouTubeThe Ultimate Shop for RAM Tuning Parts: Ammo, Valves, Chambers, and More HDR50 TR68 FSC TCP
Channel: Z-RAM
More of the Z-RAM range
This short introduces parts for several other marker families in the shop. It offers wider brand context; the specific GK1 stock and adapter information is above.
▶ Play on YouTubeFind the Best Umarex T4E Parts at Z-Ram.net . HDR68 TR50 HDP50 TS68 Pepperball First Strike
Channel: Z-RAM
Important Legal Notice
Laws and regulations governing the purchase, possession, installation, modification, and use of the products described on this page vary by country, state, and local jurisdiction and may change. Before purchasing, installing, modifying, or using any product, you are responsible for confirming that it is permitted in your location and for your intended purpose. Product availability or delivery does not mean that purchase, possession, installation, modification, or use is lawful in your jurisdiction. Z-RAM does not provide legal advice, and the information on this page must not be treated as legal advice. If you are unsure, contact the competent local authority or a qualified legal professional.
