Although D.C.’s Kingpen Slim chose a quaintly gangsterish name, he’s been steadily honing his persona into something contemporary and relatively mainstream-friendly. The Twitters? Nicely active. The YouTubes? All day long. The connections? Jim Jones, among others. The artistic partner? Virginia’s busy J Buttah. And there’s product, always product: The Beam Up II, Slim’s latest record, arrives Aug. 31. Which means there’s product about the product, like this and that. And there’s also product about specific parts of the product, like the “trailer” above, for the song “21 Gun Salute,” featuring Edley Shine of Born Jamericans. What can we assume from it? In short: Kingpen Slim doesn’t want to show you people doing bad things; he prefers to show you people dancing to music about people doing bad things. He also likes Akomplice.