Not sure if linking to a thread in another Bersa forum is a no-no here or not, but here's a discussion about certain Bersas being able to accept Sig Sauer 220/226 sights. I'm no gunsmith, but according to this thread, you can choose from tritium, fiber optic, adjustable rear sights, etc.
(link deleted per Admin...)
Moderator: if this is frowned upon, just delete it and I'll get the hint.
