"Gun Shy" has moments of absolute brilliance and others that are excruciatingly bad. I laughed frequently. I also felt it dragged at times and many of the jokes and gags fell flat. But it packs enough comedy that it's enjoyable despite the parts that felt they could have been much better. Much of it does feel as if the filmmakers threw material at the wall to see if it stuck.
The tone and style of humor are uneven. It tries to be raunchy at times, but also tries not to be too raunchy. An exchange between a diplomat and his local assistant is deftly executed. A fight scene involving a Taser is a riot. Some of the material regarding the sybaritic self-indulgent lifestyles of Rock & Roll stars is familiar and seems like it needed to be cranked up a few levels, but at other times Turk Enry's reflections seem almost cerebral. There are a few halfhearted efforts at political humor in the first act which largely fall flat. The tackiest gag involves a cheap swipe at President Trump.
Antonio Banderas's role seems incomplete. It should be what some writers call the idiot savant or the fool triumphant. The character is burned out, inept and insecure. He has heart and hasn't entirely lost his talent. But he doesn't really have a strong positive side. It's like Inspector Jacques Clouseau or Johnny English without the powers of deduction, the fearless dedication or indomitable spirit, all idiot without the savant. Banderas does an outstanding job with what he's given, but the character seems less than fully developed.
The film is hilarious at times, but frustrating in that it is not consistently amusing.
