The extra DLC options for Mass Effect 3 pre-orders continue today with the announcement of Dark Horse’s “Art of the Mass Effect Universe” book. If you pre-order the art collection through Barnes and Noble, you’ll receive download code for character boosters and a Collector Assault Rifle for multiplayer. Here’s the word on the rifle: “The Collector Assault Rifle uses the same principles as a human assault rifle, but its organic components clearly set it apart. Its power source appears to be an internal organ with biotic capacitance; its ammunition resembles pellets of metallic enamel that strip shields off enemies with deadly efficiency.” So, there you have it. Mass Effect 3 is out in March.