Fred Lutger, owner of Freddie Bear Sports, holds a Windham Weaponry WW-15 near a Rock River Arms LAR-15 (foreground) Thursday, Dec. 27, 2012, at 17250 S. Oak Park Ave. in Tinley Park. Lutger said he has sold as many AR-15s in one week as he had in a year since the shootings at Sandy Hook. | Matthew Grotto~Sun-Times Media

Fred Lutger (right), owner of Freddie Bear Sports, holds a Windham Weaponry WW-15 as employee Anthony Santor (left) records the serial number and gun description in the acquisition book Thursday, Dec. 27, 2012, at 17250 S. Oak Park Ave. in Tinley Park. Lutger said he has sold as many AR-15s in one week as he had in a year since the shootings at Sandy Hook. | Matthew Grotto~Sun-Times Media

Fred Lutger (right), owner of Freddie Bear Sports, holds a Windham Weaponry WW-15 as employee Anthony Santor (left) records the serial number and gun description in the acquisition book Thursday, Dec. 27, 2012, at 17250 S. Oak Park Ave. in Tinley Park. Lutger said he has sold as many AR-15s in one week as he had in a year since the shootings at Sandy Hook. | Matthew Grotto~Sun-Times Media

A Rock River Arms LAR-15 (left) and Windham Weaponry WW-15 (right) are seen in Freddie Bear Sports Thursday, Dec. 27, 2012, at 17250 S. Oak Park Ave. in Tinley Park. | Matthew Grotto~Sun-Times Media

Fred Lutger, owner of Freddie Bear Sports, displays a Windham Weaponry WW-15 Thursday, Dec. 27, 2012, at 17250 S. Oak Park Ave. in Tinley Park. Lutger said he has sold as many AR-15s in one week as he had in a year since the shootings at Sandy Hook. | Matthew Grotto~Sun-Times Media

Fred Lutger, owner of Freddie Bear Sports, is seen Thursday, Dec. 27, 2012, at 17250 S. Oak Park Ave. in Tinley Park. | Matthew Grotto~Sun-Times Media