1911 Parts Plus - 
Clip and Grip -
Just about every clip and grip on the planet.
Hogue - Hogue Grips
Mec-Gar - World's Finest Magazines
NRA -Store - NRA Concealed Carry 5.11 Tactical System
Pro Mag - Mags for all types of guns
Safariland - Think Tactically. Prepare to Prevail -Tactical Web Holsters
Surefire - A self-fefense firearm should always be accompanied by a self-defense flashlight.
Tac-Pack - Concealable Trauma Packs for the Safety and Security Professional
Targets.net -
CCW Instructors - Good source for targets
XS SightSystems - Around the Clock Protection - Tritium Sights