I don't think that's an underslung grenade launcher. Looks like one of the laser modules from the Night Ops squad. I find it interesting that the new 'copter is sort of a resculpt of the old "Little Bird." The design, from a building point of view, is similar. It just results in a different model.Chewy Bricks just released a video showing the Urban Copter set. It is based off of a Eurocopter EC-135 like I guessed, and includes a Capt. Merrick figure, a pilot fig and a masked soldier with a helmet. What is also interesting about this set is there seems to be a few new molds for weapons; a drum magazine and a new scar-type rifle with what appears to be an underslung grenade launcher.