Last 2 September, Tokyo Marui released their Folding 20mm Rail Stock. This stock, which attaches to the Patriot Plus rear stock base, features a folding function and is made from a lightweight yet rigid reinforced plastic. It has a convex skeleton design, which helps with muzzle movement, and includes a metal mounting base.

For attaching slings, the stock is equipped with QD holes on the side, compatible with separately sold QD sling swivels. It has an overall length of 227mm and weighs 253g.