IDZ Stock & Rail System Conversion Kit for WE 999 Series GBB

This upgrade kit comes with functional aesthetic stock design which is foldable, length adjustable, and has an adjustable cheekrest. This kit includes: -- Replacement top rail -- Built in flip up iron sights, that flip down and lie flush with the rail when not in use. -- Functional stock design with adjustable length, adjustable cheekrest as well as being a foldable stock.