I really like the german guns but we need to be aware of the ammo we put in them. I've also heard about the german lugers too. Everyone thinks the german guns are top of the line but there really not.
Really? I've never had any issues with modern ammunition (With the exception of that Blazer garbage) in my P08 or my 'red 9'. And the issue was they jammed constantly because the action didn't get kicked back far enough to eject the casing. I actually had to upgrade to hotter rounds just to make them cough out the brass.
As for the Gewehr 43, it was a very good rifle as long as you were nice to it. The only bad thing I've ever heard about them was that they weren't put into production soon enough and they liked to break firing pins (but that was probably due to poor resources at the end of the war).