This shot gun does have a fiber optic front sight dot, if your are wanting a red dot you could always get a mounting system like the "Aimtech Black Scope Mount For Winchester" budsgunshop.com/mobile/product/19128/redirect />And then run something like a romeo5 rdx model, eotech or a holosun 510c (open reflex) or 512c (enclosed). For a reddot on a shotgun I really like the option of reticle on the reddots I listed you get to choose between 32 MOA circle (CQB distance) 2 MOA dot only (more precise shots for slugs and such) or even better the circle dot combined that has a 32moa circle with the 2 moa dot in the middle. All those rds Listedet you cycle through and select the one you want to use, the holosun even come In your choice of red, gold, or green dots. And the holosun also have solar power to extend the already impressive 50,000 hour battery life, they also feature an auto sleep mode,and shake awake so your always ready to go.
If you are looking for great reviews I'd look at C-does on YouTube that guy has some of the best optics reviews on the internet. Sage dynamics on YouTube is pretty good too but he mostly only reviews high end optics. Hope this helps.

Mark, I highly recommend reading over these recommendations and make a decision based on your needs and budget Sir. - https://riflescopescenter.com/best-red-dot-sights-for-shotguns/

some of the SPX models are drilled and tapped for optics on the others you will need a scope mount budsgunshop.com/mobile/product/19128/redirect unless you are deer hunting with slugs or turkey hunting optics on a shotgun are not necessary mount the gun properly and it will shoot where you look