Additional Reading:
HK's VP9: Total Reset
HK VP70: Credit Where It's Due
Heckler & Kock P7 Pistol
American Rifleman's 2015 Golden Bullseye Awards
NRA Gun of the Week: Heckler & Koch VP9 Pistol
Heckler & Koch Adds Tactical Model to VP Series Pistols
SHOT Show 2017: HK VP9 Tactical Pistol
Heckler & Koch Announces Compact VP9—the VP9 SK
Video: Heckler & Koch VP9 SK Compact Pistol