Accoring to some info posted here on AS, the 2041/2045/2050 are built on the same platform. I don't know if the "brake engagement handle(s)" are the same, or if they have Husqvarna and/or Poulan equivalents, but something tells me they will.
Hopefully a knowledgeable AS member will post a reply. You might have to do some digging in the respective IPLs.
Try site sponsor chainsawr, their link is in the ad banner near the top of the page. If there is a Husky equivalent, try Bailey', another site sponsor. And there's always eBay.