I think this book would make a great option for Marvel Comics-- it has a hero / heroine team that are virtually indestructible, despite multiples of bad guys shooting them, explosives slinging shrapnel into their well proportioned bodies, a plot that simply defies credulity; for example, the bad guys have blockaded themselves, along with our heroes, into a tenement building that has but one door in/out. Half the NYPD, including their vaunted ESU (SWAT) personnel, plus a U.S. Marshal's team are all stymied... tried to land a helicopter on the roof and got decimated by some mines and rocket launcher (bad guys got all the goodies), and so, can't fathom another way in. This, despite numerous windows and a mostly abandoned building!
Like I said, Marvel comics... think one of their money-minting movies that moves swiftly from one explosion to the next, mixed in with scenes where heroes managed to kill their way through the numerous foes thrown against them. Got it? Okay, then you get the jist of the book.
That is not to say this can't be enjoyable. It is, if for no other reason than that it sweeps along from one firefight to the next with alacrity. And I give credit to the author for actually researching his weapons information. A pet peeve of mine is when an author confuses revolvers with semi-auto handguns, etc. On the down side, Mr. Barber goes overboard to prove his knowledge about weapons and firearms, offering details about every weapon deployed throughout the pages (and there are plenty) despite that information being largely extraneous to the story.
So, if you're in the mood for bang, boom, only bad guys and expendable good guys dying, and a plot that really is secondary to the mayhem, you're in the right place. Pass the popcorn.