Determining Front Sight Thread Size for Shotgun

If you are looking to replace the front sight bead on your shotgun, you will first need to determine the thread dimension of this front sight bead. You should take your shotgun to a local gunsmith, where they can carefully remove this bead, without damage to the bead or shotgun and then make a determination of its thread dimension. Once this is known, you can select from our Star Brite, Long Bead and Fat Bead replacement front sights in thread dimensions of:


  • 2.6mm (M2.6×0.45)
  • 3-56, 3.0mm (M3x0.50)
  • 5-40
  • 6-48