It doesn't look like much on paper, but performs pretty well. The full omnipod bonus on the VPR-B is something extremely rare, a PPC velocity quirk at +50%. This takes full advantage of it. You can easily get 400 - 500 damage games on this setup.
Easily? I do that with my Nova but that's dual ER PPC, more hardy and better heat wise (18 DHS and a 8% heat reduction quirk). Average 435.94 damage and just over 1 kill a match. I'm admittedly leveling it from scratch so it will improve but I struggle to see doing half the long range damage and getting that much unless you're hanging way back as people are already adjusting to killing Vipers. What are your actual stats with it?