A step forward from the well-renowned Berserk stock being stronger, lighter weight and more versatile. This new GRS stock is made in a fibreglass reinforced composite and features Speedlock II which gives adjustment for the length of pull, height and cant of the recoil pad and height of the cheek piece too. The GRS Bifrost features quick detach flush cup sling swivels and rubber surface on the ergonomic grip and forend for comfort.