My experience is a bit different. I had a 19 that was exceptionally easy to shoot accurately. I stupidly traded it for a 19c. I was newer to handgun shooting at the time and kept having feeding problems, yeah I know, limp wristing. It was pretty much the only pistol I have ever had problems with, ok, well I my customized CZ SP-01 did go through a doubling phase when the trigger was a touch too light.
How do the GAP frames compare to the newer SF frames for .45 acp and 10mm?