What hardware comes with the sight?

Everything you need will be included.  This includes the aluminum frame and hardware for mounting.  The Anchor Sight is assembled, so you only need the two screws for mounting the frame to the riser and two screws for mounting the Anchor Sight onto the frame.  All items are included in a packet that also contains three brass washers and an Allen Key for turning the micro screws.   All micro screws are assembled and factory preset for correct tension.