After looking at several red dot scopes for my shotgun I think I have decided on a Sparc or Aimpoint micro. The smaller size (20mm) sits lower providing for a better cheek weld to the stock. The larger 30 mm scopes move my head too high without the aid of a riser on the stock. My question to anyone using one of these is the field of view too limited on these small optics. I will be using the shotgun for night hunting coyotes and turkey hunting. It will be mounted on top of the reciever. Thanks for your input.