This is a Russian made adjustable cheek rest for metal trianglestocks. It is made out of a reinforced polymer. It’s adjustable in height by adding or removing inserts.
The cheek rest is secured to the stock with 2 screws(included). Please note, in order to secure the cheek rest to the stock, 2 holes willneed to be drilled into the stock (7 mm drill bit needed). Pictured stock, rifle and stock but pad (available separately) are not included. All items pictured in photo #4 are included in the kit. Does not interfere with locking the stock in the closed position.