Truglo TG947ERM Long Bead Metal Browning/Caesar Guerini/Charles Daly/Franchi/Moss Reserve O/U/Wthby/Win Fiber Optic Red 3mm

The Long Bead by Truglo is CNC-machined, and it's the industry's favorite bead replacement. This shotgun sight is red, with a fiber of 0.078" in diameter and 0.5" in length.