It’s more lukewarm than bad. Hostile Guns doesn’t offer much to get excited about; it’s a film from the late 1960s that feels like it’s desperately trying to hold onto what was left of a Western genre already headed elsewhere. R.G. Springsteen directed, and Steve Fisher, Sloan Nibley, and James Edward Grant co-wrote the screenplay. The cast includes George Montgomery, Yvonne De Carlo, Tab Hunter, Brian Donlevy, Jo…