HK Mounting Plate #4, VP OR, Leupold DeltaPoint 50254264

VP9SK Optic Ready Slide w/Tall Sights & Slide Cover Plate 51000950

HK Mounting Plate #5, VP OR, Burris Fastfire 2 or 3, Vortex Viper or Venom 50254265

HK Mounting Plate #1, VP OR, Noblex sight III, Meopta MeoSight III, EOTech MRDS 50254261

HK Mounting Plate #3, VP OR, C-More STS2 50254263

HK Mounting Plate #2, VP OR, Trijicon RMR 50254262