They look like the cheap and nasty aftermarket mirrors that need the bolt loosened for major adjustment and only have limited 'easy' adjustment of the mirrorglass itself.
My LS had chrome rectangular mirors from the factory, one of which I broke in a crash. I then used bar-end mirrors for years untill I found a set of second hand genuine harley (sportster?) mirrors that are very similar to the original. I have had the harley mirrors on the bike for about 10 years and they work fine, minimal vibration, easy to adjust etc.
They have 'Harley Davidson' engraved on the stem in small letters and I don't think anyone has ever noticed that thay aren't BMW.
I paid $30 bucks for the pair from a throw out table at the local HD dealer.