Ransom for a Gunsmith — J.R. Roberts

Clint Adams rides into the town of Casa Grande and finds himself involved with two sets of brothers. One set kidnaps him and tries to sell him to the other set. But the Tanner Brothers are just kids trying to make a better life for themselves and their sister, while the Colter Brothers are a murderous gang. In the end, with the assistance of two lovely ladies, Clint ends up trying to help the youngsters who kidnapped him get out from under a crushing debt, while he himself must avoid being gunned down by the deadly Colter Gang.