Nylon Sight Front and Rear Flip Sights, Installed on Picatinny or Weaver Rail

* EASY TO MOUNT：This folding backup scope mounts easily to any Picatinny rail or Weaver rail. * FREEDOM OF ADJUSTMENT：The spring-loaded flip-up scope can be easily activated from either side, or by pressing on the top. * Rugged：Detent and spring pressure keep the scope upright, yet it still folds smoothly under conditions such as impact. * PREMIUM QUALITY MATERIALS：Machined from lightweight and extremely durable nylon plastic, the impact-resistant polymer construction is lightweight and resistant to mishandling. *