Need help finding a Uberti SA-5 rear sight insert

[M4Sherman]

I picked up one of these today from a friend but it is missing the rear sight insert and the set screw. Any idea where to find one

[Scorch]

If you go to the Uberti site, you can click on the item number and see a schematic for parts, and order the sight from a dealer.
http://www.ubertireplicas.com/index.php
http://www.uberti.com/