Remember - this is an international forum. We must provide some degree of geographical familiarity for our non-U.S. brethren so they don't sit and scratch their heads wondering where MJ lives and where he's seeking to purchase a Ljungman. Mmmmmm....?
I think that a 42 may be a tough find...might have to "settle" for a 42b. You said nice, not cheap. Allan's Armory had a nice one recently - if it is gone, he may be able to find another. http://www.allans-armory.com/aa.php Might also try Empire Arms and keep an eye on the trader. They show up unexpectedly. DDR
You will only find the AG42b Ljungman rifles in the USA . Many were inported into the USA in the mid 1990's by Century Arms in the $250 price range .
The " B " model had several updated modifications . I believe that page was lost in the last move . Some mods were a stainless steel gas tube & 2nd catch on the magazine . There may have been as many as 8 or 9 mods , if I remember correctly . Perhaps someone else knows all of the differant mods .