Do you remember all the late-1990's Tarantino rip-offs? This feels like a rip-off of those rip-offs. "Copshop" is an "Assault on Precinct 13" style plot, with all sorts of nefarious criminals trying to break into a remote prison in order to kill one of the inmates. Everything about this movie has been done in far more mediocre efforts. Avoid at all costs.