Absolutely, I'm thinking they failed quite frequently. Most of these were built and hurried through and I think the Germans even knew these rifles were only good for so many thousands of rounds before they knew they would catastrophically fail. I guess, during the rush of things, they couldn't go into the design aspect and design fixes into the rifles because I'll bet it would take up too much resources and such and it would be easier to simply replace the rifle once one catastrophically failed. Or, it would be easier to replace whatever parts failed quicker too. I'll bet the mentality was "just replace it, don't worry about a fix". I can't really source my thoughts, but after reading more and more about these rifles, that's what I have been gathering. I also think that, by design and design fixes that could have taken place, the G/K.43 series could have way out performed probably every rifle out there in the field during WWII, even our M1 Garands. The design was just much better, but the materials and procedures for assembly were poor for the most part.