Mossberg 835 front sight question....

[bassmaster]

Does anyone know if the front bead on a mossy 835 is a "5-40" bead, and what does the 5-40 mean? Im trying to get a fiber optic front sight, but I need to know which one.....

[Guest jackdm3]

Which type of "fiber optic front sight"? Mine is a TruGlo Glo Dot II that works well in ambient light, not at all at night.

[bassmaster]

im just trting to figure out best route for my new tactical shotgun setup. Should I do fiber optic front sight, red dot scope, reflex sight (like eotech but cheaper), etc;