Here's how I imagine the pitch going.
Executive: How many guns are in it?
Executive: I don't know.
Pitcher: No wait. Two. Two Guns.
Executive: Shit, now we're talking. Go on.
Kidding aside, 2 Guns was seriously a lot of fun.
Synopsis (per IMDB):
A DEA agent and a naval intelligence officer find themselves on the run after a botched attempt to infiltrate a drug cartel. While fleeing, they learn the secret of their shaky alliance: Neither knew that the other was an undercover agent.
2 Guns (the movie) is based on a series of comic books written by Steven Grant for Boom! Studios. I've never picked up the books, but after seeing the film, I may have to look into it. You've read the synopsis and likely seen the trailers, so I won't go into detail on the plot. Marky Mark and Denzel play off each other perfectly. Their banter was hilarious.
The story is what it is. When you expect someone to be in on the conspiracy, they likely are. Nothing unpredictable, but you're not seeing this movie for unexpected plot twists.
No, you're seeing this movie because not only does it contain a gun, but two guns. Almost enough to get started on that gun rack.
You're seeing this movie for the witty (witty?) banter between these characters caught in a deadly game of "where's my money?!" between a drug cartel, the navy, the DEA, and the mystery mouseketool (Mickey Mouse Clubhouse helping to keep this spoiler free).
This wasn't quite there, but was nearly as good of a shoot 'em up as, well, Shoot 'Em Up.
See this if you're looking for a fun(ny) action flick a la Shoot 'Em Up and The Expendables.