I like that mini bar except that it looks like a flattened mini jet... why the need for the big black split in the middle?
It's a seam between the upper domes.
FedSig made a number of those little versions for demo. The production bars will be available up to 87". Some had rotators, others had a QuadraFlare (the new style, not yet out as a single) in the middle, etc. We had one here and a couple departments saw it. One had 3 trucks on order and called the manufacturer of the truck and told them they wanted the Navigator on the trucks instead of the other bar they were going to get put on.
They're really nice bars - tons of flexbility - you can add mirrors, rotating LEDs (in single or multi colour), the new Quadraflare 6x4 module (single or multi-colour, and by that I mean dual colour, not split). The whole bar can go white steady-on if you want (if you order the multi colour), and can have different colours in different modes (red with white en route, all red at scene), etc.
The housing is certainly nothing special, but the 'smarts' of the bar are really well thought out.