A customer looks over a Glock 17 9mm hand gun at the Guns-R-Us gun shop in Phoenix, Arizona

 
A customer looks over a Glock 17 9mm hand gun at the Guns-R-Us gun shop in Phoenix, Arizona
A customer looks over a Glock 17 9mm hand gun at the Guns-R-Us gun shop in Phoenix, Arizona, December 20, 2012. REUTERS/Ralph D. Freso