Won't work that well on a Hellcat.My optic of choice is a dang gold bead screwed into the end of my shotgun barrel…
Also, I highly suggest you try a Holosun 510C on your shotgun. I thought I was fast before. It's almost unfair dude. Lightning fast and I just can't miss.
Also my one tactical shotgun that doesn't have an optic on it is a Mossberg 500 with a single gold bead on the end of it. The bead part is gone thanks to a modification I did to the heat shield which means it has to slide off the front and it's very tight. No matter, I am cross eye dominant and long ago started putting in the work it takes to overcome that disadvantage. Inside 15 yards I don't even need the bead.