Right now, there's a $29 BSA 30mm tube sight on it, just to get a feel for the gun's potential. I put a Weaver rail on the gun for a mount.
When all's said and done, I have a N.I.B. Burris 135 Speed Dot sight that will go on it. I love that sight for a turkey gun. Have it on several of mine. Wish they still made them.