Required fitting.
When I'm assembling a firearm I expect to have to fit most of the parts to the frame to do it right. However, I was not expecting to have to fit the guide rod. I was assembling a 1911 Government using a Caspian frame. Other makes, guns, etc., may not require fitting. I had the same issue with an Essex frame. For a few bucks more I'd recommend my friends try a different recoil spring guide.
