Russian made Custom Arms folding triangular stock cheek riser. Allows to use scopes and red dots with more comfort. Cheek is adjustable up to 30mm (1.18′) height. The riser has scale, so you can precisely adjust it. Can be used by both right and left handed people. The riser allows the stock to fold and lock. Made of fiberglass, so it can take much aduse both in cold and hot enviroment conditions.