Mine is still in the stock form and I put between 1500 to 2000 rds through the GSG 1911 so far. I lost track of the round count because I was shooting a Ruger 10/22 and a Ruger 22/45 on the same day the second time I took the GSG 1911 to the range. I had a few FTF the first time because I didn't seat the first round of the mag properly. Once I learn to pay attention to the first round then I had zero trouble with the gun and with all kinds of high velocity ammo.
I really hope it stays this way because I didn't plan to replace anything on the gun. The thumb safety is uncomfortable but since it's only a 22 I can tolerate it.