Istec 4373 flip over weapons mount used with the Charlie G that is used by the US and European forces. On the GPMG or other MMGs these are different to the L12A3 mount as they are fitted by a side picatinny clamp and are rather than the face plate mount which replaces the dovetail on the GPMG these could be retro fitted to any small arms platform with a requirement for NVG or Thermal application These are new