On 64, I believe there is one near the Flak 18, like Thor said. I think there is also one near FJR on 64 as well. On 32, there is one in the German uncap (Germans have an uncap on 32, right?).
EDIT: Actually, looking through the gameplayobjects.con (that I can't read correctly because I can't understand it), there is one Berretta on PHL 16 in the Axis Main. There are two on 32, one keyed to Cafe de Normandie and one keyed to Pommenauque, however, I can't read the coordinates, so I don't know where they spawn. 64 has 4: One keyed to Bridge No. 4 (I know where it is, on the table next to the ammo kit just north of the FlaK 18), two keyed to FJR (the coordinates suggest that these are far-ish away from each other, but since I can't read them, I don't know, but I think one was near the nebel), and one last Berretta keyed to Crossroads (again, can't read coordinates, so I can't say where it is exactly).
Anyway, I just hope I didn't break PHL on my computer by looking at the files...