Guns of the Magnificent Seven by Paul Wendkos

5.20

When Quintero, a Mexican revolutionary leader, is left to rot in jail by the forces of President Diaz, it's up to his subordinate, Max, to bust him out. With $600 in hand, he crosses the border into America and hires Chris Adams, a mercenary of considerable skill, who uses the rest of the cash on more hired guns. After the team is rounded out by experts on close-combat fighting, explosives, and knife-throwing, they set off to free Quintero.