H&K seems to be getting closer to releasing its .308 AR, MR762 A1. Just like anything H&K makes, it is a reliable rifle. H&K designed so that even after the hammer has fallen, safety switch can be engaged. Since it is piston driven there is little fouling in receiver. Price will be around $3900.
The rifle at the bottom of the photo is G26 DMR, which is not available except for German military, Bundeswehr.