Is it this mount from Swiss Products? http://www.brownells.com/.aspx/pid=1666/Product/SWISS_PRODUCTS_SCHMIDT_RUBIN_K31_SCOPE_MOUNT
Sorry, for the hijack.
It's a mount like that style, but I believe it was from Accumount. I think mine is longer also.
Has anyone see the sights made by Mojosights? http://www.mojosights.com/swedish_mausers.html
I've seen them. I've even seen them on one rifle, but I've never actually shot one. I would want to put on correct Swede peep sights if I were going to go that route.