Wedding Crashers co-stars Vince Vaughn and Owen Wilson could reunite for 2 Guns.  Vaughn is already attached, and Wilson is said to be eying the other lead role.  Pajiba provides a brief outline for the action film:

"[2 Guns] follows two lawmen, neither of whom realizes the other is a 'good guy,' as they plot to rob a bank together, having been assigned to do so by their employers, and then must figure out who the dirty money belongs to as their respective agencies try to hunt them down."

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The script is credited to TV writer Blake Masters, creator of the Showtime mob drama Brotherhood --- he's currently working with Dick Wolf on procedural spinoff Law & Order: Los Angeles.  Universal has yet to secure a director, so we'll see how this one shapes up in the coming weeks.  Looking at their live-action resume since Wedding Crashers --- You, Me and Dupree, Fred Claus, Drillbit Taylor, Couples Retreat, etc. --- this doesn't sound like such a bad idea.