You can try MidwayUSA at:
http://www.midwayusa.com/esearch.exe/sea...h=Search_Button

or at Cabela's
http://www.cabelas.com/information/Hunti...667225800a.html

Of course, you can always try the source:
http://www.wildwestguns.com/

Otherwise, just try the search button at the top of this forum and search on "Happy trigger" or "Wild West Trigger".

"A free people (claim) their rights as derived from the laws of nature, and not as the gift of their chief magistrate."
--Thomas Jefferson, Rights of British America, 1774