Carjackers choose vehicle owner with concealed carry license. It's a painful miscalculation.

A pair of men — one of them armed — approached a car owner standing outside his vehicle on the southwest side of Chicago in broad daylight May 10 and demanded his keys.

But police told the Chicago Tribune the victim wouldn't hand over his keys.

See, he's a concealed carry license holder, police told the paper — and he pulled out his own gun and started firing.

The vehicle owner shot one of the perps "in the groin area," the Tribune reported. The other one took off running but was arrested shortly thereafter, the paper said.

The wounded suspect, 25, was taken to a hospital where he was listed in good condition, Chicago Fire Department spokesman Larry Langford told the Tribune. The other perp's age is unknown, the paper said.

Charges are pending against both suspects, police told the Tribune, adding that a weapon was recovered.

"It’s unclear if the victim lived in the neighborhood where the shooting occurred, but at least 429 residents have active concealed carry permits, according to the most recent statistics from the Illinois State police," the paper noted.