This is a HK DA/SA known as the P30S chambered in 9MM, model 81000112.
A recent HK pistol design" the P30 is a modern police and security pistol that combines function and safety. Ergonomic features include a special grip frame with interchangeable backstrap inserts and lateral plates" allowing the pistol to be individually adapted to any user. Ambidextrous controls include dual slide releases and magazine release levers.
Features:
Polymer Frame
Cold Hammer Forged Barrel
Polygonal Rifling