HK VP or Mounting Plate C-more Sts2 for sale online | eBay
New Optics Ready VP9 From Heckler & Koch | RECOIL
Amazon.com : TRINITY Compact red dot Sight for hk vp9 Tactical Optics Home Defense Accessory Picatinny Weaver Mount Adapter Aluminum Black Class IIIA 635nM Less Than 5mW. : Sports & Outdoors
DeltaPoint Pro (fits Holosun 407k / 507k, JPoint, Redfield Accelerator, and Optima) Sight for HK VP9