I have owned a Bersa Thunder .380 cal.
Excellent copy of a Walther.
Walther and Smith & Wesson have joined together in some sort of a partnership.
Walther has their USA offices in Ft. Smith, Arkansas.
I have corresponded with them and found them very helpful.
I presently have a Walther PPQA 9mm.
The QA designates that the first trigger pull is the light 5# instead of a much heavier first trigger pull, then "re-sets to the lighter one.
German quality and engineering with a USA partner.