It speaks volumes that to make a point you must repeatedly lie
One study found that just 1 percent of gun dealers sell almost 60 percent of the guns used in illegal crimes. Washington, DC’s Bulls Eye Shooting Supply – the dealer that supplied the weapon to the DC sniper – is one of the repeat offenders, having been connected to the sale of weapons traced to over 50 area crimes.
The ATF has called the study you list flawed. Bullseye is in Washington State. Bullseye did not supply the gun, it was stolen.
Email Seth and let him know.