Marble's Expert Shotgun Night Front Sight 3-56 Thread Tritium

Make: Universal ShotgunsSight Color: WhiteStyle: Tritium Beads CNC-machined, steel sight uses eye-catching tritium to provide a fast sight picture in low light and an easily-noticeable, white ring for regular light. White ring is recessed to protect it from being scratched and to ensure proper light reflection from any angle. SPECS: Steel, blued, matte finish. Approximately .32" (8.1mm) long, 3/16" (4.8mm) wide, .21" (5.4mm) high. 3/32" (2.4mm) shank length. See price line for thread diameter. 6-48 Oversize (OS) has a diameter of .146" (3.7mm) which requires a .146x48 tap. ;