Of mass market 1911 style guns you can buy off the shelf, everybody is shipping too many turkeys that don't work right out of the box or that have something (MIM) break after a few hundred rounds! A high enough percentage are good to keep the profits up, but the customer is the QA/QC department these days.
Custom guns I don't know, I've never been able to bring myself to spend more than $650 on any handgun, (althouh a few I have are worth a bit more than that now).
--wally.