Guns from Powder Valley — Brett Halliday

To save his wife's closest friend, Sheriff Pat Stevens -- with the help of his trusty friends Sam and Ezra -- pursues a gang of masked gunmen

Sheriff Pat Stevens should be the happiest man in Powder Valley. He has a thriving ranch, a healthy son, and the prettiest wife in Colorado. After a shootout with a gang of outlaws nearly cost him his life, he promised Sally he would hang his guns up for good. But trouble is coming to the Valley, and Pat can feel his trigger finger starting to itch.
 
In nearby Dusty Canyon, a troop of hooded killers menaces the honest miners who toil in the local goldmines. The local sheriff has already been wounded once trying to stop them, but he continues the fight -- and begs for Pat's help. At first, Pat resists the urge to join the fray, but when Sally's closest friend is put in the line of fire, he has no choice but to ask his loyal sidekicks, Sam and Ezra, to ride into battle with him once more.