A Star of David on German brass ammo

The man in the middle, who was a dealer at a show, wanted to know why Magen David was present on German ammo with “ak” headstamp. Luckily, there were a couple of experts standing nearby, so I brought him to them.

So, what did Bob and Danny have to say?

The experts said that it was supposed to be an asterisk with 6 petals. I remember asking the same question somewhere at this forum.