[Good sight for benelli M4?]

I believe it is the stock Benelli butt pad. I can still use oem iron sights with the scalarworks mount attached. I tried my best with my iPhone camera to show what it looks like aiming with irons.

[Good sight for benelli M4?]

I went with the Scalarworks Leap mount with the Trijicon SRO. I can still use factory sight if the red dot fails and I liked how much faster I can find the red dot on the SRO. This setup is very forgiving on the cheek as well.