Outlaw Empire (A Gatling Western #2‪)‬

Gatling was a master armorer, a dead shot and an expert in his field—which was death. Armed with the latest automatic weapons from all over the world and paid in gold to test them on living bodies, he was probably the single most dangerous man in the Old West. At his command he had more firepower than a cavalry regiment, and more guts than a Cheyenne war party. He would need all of his skill to take on ...
THE MISSION
After thirty years in jail, Wilson Murrill was back in business, organizing every gang of cutthroats west of the Mississippi. The Italian Black Hand from New Orleans was ready to join, as was the Sydney Ducks, a group of Australian killers who ran roughshod over the Barbary Coast. When combined with all the other isolated groups of vicious vermin, Murrill would control crime in the U.S. Only Gatling had the skill to eliminate him and his rabble. Only Gatling had the weapons to utterly destroy them all.