Safariland 007 Holster
At one time that was the preferred IPSC rig. I have one for a 1911A1 style gun in good condition. If you are going to look at the Safariland stuff then you should consider the two belt system as well. Even if you change guns the belts will still work.
i can't wear mine anymore because I went from a size 44 to a 34. If you know anyone looking pop me a line.