For all of you out there struggling with front sight removal, here's the tool to do the job. It's a repro of the original, being sold by Nick Dailey on eBay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=585&item=2288244364&rd=1
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=585&item=2288244364&rd=1