Airsoftjunkiez posted a video showing the Airsoftjunkiez KRISS Vector with PolarStar Jack do a FPS consistency test. This has a custom PolarStar Jack which has a custom FCU with Burst Mode. It does Semi, 3-round Burst, and full auto. To install this in the KRISS Vector AEG, a custom HPA chassis is done. You can order this at the Airsoftjunkiez online store.