Richard Clayton, owner of the pet supply shop The Pet Castle in Hayes, believes so wholeheartedly in the Second Amendment that he’s actively encouraging gun owners to visit his store openly armed.

He’s doing this by offering a 15 percent discount on merchandise through the end of March to anyone who drops by openly—and legally—carrying a weapon.

Clayton has long offered a standing 10 percent discount for all military and law enforcement personnel and for all concealed handgun permit holders, but recent stories about other businesses across the country encouraging open carry gave Clayton the idea to go a step further himself. He said he doesn’t like to mix politics and business, but "this is something that’s really important to me."

"The more people that carry openly, the less taboo it will become," he said.

The son of a military small arms instructor, Clayton said he’s been shooting since he was four years old, when he would sit on hi...