Tuscon gun store says it has refunded the money . Gabby Giffords is the husband of former Rep. Kelly . An Arizona gun store says it has canceled a recent purchase of an AR-15 semiautomatic rifle by Mark Kelly thwarting the retired astronaut 's attempt to demonstrate how easy it is to buy high-powered weapons . Giffords was shot in the head in Arizona December .
Tuscon gun store says it has refunded the money . Gabby Giffords is the husband of former Rep. Kelly . Giffords was shot in the head in Arizona December .