Suspected Virginia Beach shooter used a gun suppressor. Did it make Friday's shooting deadlier?

Toiling away Sunday morning in the muggy confines of his gun shop, Mike Brini said requests for suppressors, a device used by the shooter who killed 12 people in a nearby government office building, are few and far between.

While a suppressor muffles the sound of gunfire, gun rights advocates and law enforcement experts said the use of one likely did not determine the deadliness of Friday's shooting but could be a sign that the suspect carefully planned the attack.