Texas Renegade (A Gatling Western #8‪)‬

Weapons manufacturer Hiram Maxim was a man with a problem. The Ku Klux Klan and a labor movement known as the United Workers of America were cutting up rough and threatening to put his business partner, a Scottish laird-turned-meat packer named Kinnock, out of business. So he sent Gatling to West Texas with orders to deal with the bully-boys.
It was a tall order. Those fellers played for keeps and there wasn’t much they wouldn’t do to get their own way. Still, as rough as they played, Gatling played rougher. And with the latest weapons at his disposal, as well as an armed and armored Motor Scout car, Gatling was about to play plenty rough indeed.