Diablo Rod & Gun is part of United Sportsmen Inc. Located at 4700 Evora Rd. in Concord Ca. Take HWY 4 to the Willow Pass Road Exit. Proceed North on Willow Pass Road until you reach Evora Rd. Make a right turn on Evora Rd. and go up the hill. The entrance to United Sportsmen Inc. is on your left and is well marked.