XS Sight Systems Big Dot Tritium Orange Shotgun Requires 0.125" to 0.140" Diameter Bead With Mossberg Front

XS Big Dot's Tritium Offer You Superior Front Sight Visibility in a All Lighting Conditions
XS Sights Systems Shotgun sights are a crucial addition to any defensive shotgun. Utilizing a better front sight set up on your defensive shotgun can provide you with a distinct tactical advantage in any lighting condition. The sight features a green tritium vial that will glow in low light situations while the orange will take over really well in bright light conditions.

XS Sight Systems Tritium Big Dot Shotgun Front Sight (Orange) Specifications and Features:
XS Sight Systems SG-2005-3N
Tritium Big Dot Front Sight
Orange Front Circle
Green Tritium Vial
Improves Sight Acquisition
High Contrast Sight Picture
Great in All Light Conditions
Epoxies over existing front bead
Easy Installation
Metal Housing
Matte Black Metal Finish
Includes:
Tritium Big Dot Orange Bead Sight
Replacement Bead for Mossberg Shotguns
Fits:
Shotgun Front Bead Sight with a Diameter of 0.125" to 0.140"
If your bead is not in that range then Either #6 or #26 aftermarket beads are recommended.