H&K didn't have much this year, but P30SK is a nice pistol and recoil didn't seem any more than the full-sized version.
What makes H&K more interesting is the other guns they make.
Here is HK 121, a MG made for .308
HK G28E had enhancements after listening to users of G28. They still haven't given up on reverse KeyMod. The brass kicker seems to be a bit more enlarged as well
MG4 KE is in 5.56 caliber