Billboard has updated their charts for the week of October 1st and guess what is still at number one? Yep, Green Day's track, "Bang Bang."The lead single from Revolution Radio has now spent four straight weeks at the top of Billboard's Mainstream Rock Songs chart On the Mediabase charts, which count just radio airplay, "Bang Bang" is also still performing well and making gains. The track remains at #1 on the Active Rock songs chart and has moved up to #4 on the Alternative songs chart.On other Billboard charts, here is how the song is performing week-over-week:#2 (same as last week) | Chart #4 (up from #6) | Chart #16 (down from #14) | Chart