W/P sight set Ghostring with dot white

Caliber 12GA, repeating and/or hunting shotguns, W/P Tactical sight set SG6 Locking Ring ghost ring black and sight bead dot white interchangeable, ghost ring sight height and side adjustable and is mounted on a W/P-Weaver or Picatinny rail, sight bead for standard barrels with an outer diameter of .819/20.8mm to .882/21.4mm and also for thicker barrels with an outer diameter of .858/21.8mm to .882/22.4mm, including mounting screws and material, Code SHT01W LPA Italy. Reworking is usually not necessary - professional installation is recommended!