A Glock 20 10mm hand gun is displayed at the sales counter of the Guns-R-Us gun shop in Phoenix, Arizona

 
A Glock 20 10mm hand gun is displayed at the sales counter of the Guns-R-Us gun shop in Phoenix, Arizona
A Glock 20 10mm hand gun is displayed at the sales counter of the Guns-R-Us gun shop in Phoenix, Arizona, December 20, 2012. REUTERS/Ralph D. Freso