Here's a link to a site with step by step directions on disassembling the 1911.
http://www.gunsworld.com/colt/1911_ad1_us.html
Here are Links to 1911 parts mfrs:
http://www.gunsworld.com/colt/1911_race3_us.html
http://www.gunsworld.com/colt/1911_ad1_us.html
Here are Links to 1911 parts mfrs:
http://www.gunsworld.com/colt/1911_race3_us.html