September 17, 2021 | R | 1h 47min What you get in “Copshop” is a gallows-humor-packed, abrasive, crime-thriller from director Joe Carnahan, a filmmaker who specializes in exploring America’s criminal underbelly in similar fashion to Guy Ritchie, who portrays British versions of the same milieu. And as opposed to Carnahan’s 2002 ultra-gritty and very serious “Narc,” (starring Jason Patric and Ray Liotta) “Copshop’s” got enough Tarantino-esque humor to nudge it into B-movie and Grindhouse territory. It’s got a little bit of John Carpenter’s “Assault on Precinct 13” and a fair amount of “Die Hard.” What Happens One night at the Gun Creek Police Department—an oddly well-appointed and stylishly modern police station smack-dab in the middle of nowhere in the Nevada desert—some stuff happens. But first, we meet the first of the four main characters, slippery con-artist and long-time mob fixer Teddy Murretto (Frank Grillo rocking a man-bun, an early 70’s …