The Weaver rifle mount is used to install riflescopes on hunting weapons that are equipped with Weaver/Picatinny-type rails. It is a basic type of rifle mount, which is fixed to the rail with steel stop screws. The front part of the rifle mount has a transverse stopper (pin) which prevents the riflescope from shifting during recoil. The pin is removable and bilateral. Its position is defined depending on what rail (Weaver or Picatinny) the riflescope is mounted on.
