In a strange paradox, executing a proper farce demands preternatural planning. Stray but a little from the knife’s edge, and the tone can spiral out of control as the conflicting elements of the film separate like a broken sauce. Ben Wheatley’s Free Fire suffers such a fate, though it isn’t for lack of effort or a gripping central idea. The film tries to position some idiosyncratic characters in a bottle, shake everything up, and let them shoot guns at each other for 75 minutes, but too many of these elements are just a bit off the mark. The characters and the performances mostly hit, and the inciting event feels reasonable, but the organization and the length of the fight strains comprehension and ends up being to repetitive to hold the spectator’s interest. Free Fire does a better job than most genre-bending farces, but ultimately it just feels too boring for a movie centered around a free-for-all firefight.