T/S Sight Set Ghostring 3-Dot Fiber

Caliber 12GA, repeating or hunting shotguns, T/S-Tactical Super sight SG3 locking ring ghost ring 3-dot fiber green height and side adjustable and front sight fiber red interchangeable, front sight 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 SHT03R LPA Italy. Reworking is required for the rear sight - professional installation is recommended!