Read my post about this issue
http://forums.1911forum.com/showthread.php?t=130134
Im my situation, the guide rod was slightly touching the barrel lug and when the slide goes into battery, the guide rod would slam into the barrel lug causing metal to metal contact so some guide rods are ground at that angle to allow clearance.
http://forums.1911forum.com/showthread.php?t=130134
Im my situation, the guide rod was slightly touching the barrel lug and when the slide goes into battery, the guide rod would slam into the barrel lug causing metal to metal contact so some guide rods are ground at that angle to allow clearance.