“Gangster Land” (** out of four) was a mediocre underworld cops melodrama set in 1930’s Prohibition-era Chicago in which “Machine Gun” Jack McGurn (Sean Faris) rose from amateur level boxer to eventual second-in-command of Al Capone’s criminal empire, despite the warring factions between the Italians and Irish (Mark Rolston, Milo Gibson, Peter Facinelli, and Jason Patric) going on around him. Lots of style, action, fedora hats, and fancy guns but it plays like a high-school version of the much better “L.A. Confidential” and “Gangster Squad.” Watchable but pretty forgettable. Patric fares best in cast as a crooked cop.