Hi Midwest,
There are scope rings with small length of Picatinny or Weaver rail on top, which would allow for a red-dot stacked on the scope a la a 3-gun set up. BUT....I recommend to choose either the scope or the red dot like RPD63 stated. Last year, I topped my turkey gun with reflex red-dot. I was concerned about losing peripheral vision over the barrel, but that's likely a carry over from my skeet shooting.
Good luck. Let us know what you decided.
PS...turkey hunting is a disease.