Patent 8042448 was granted and assigned to Primary Weapons Systems on October, 2011 by the United States Patent and Trademark Office.
A muzzle device configured to be attached to the muzzle region of a barrel. The muzzle device has a compensator region positioned longitudinally rearward from a flash suppression region. The muzzle device further is provided with adjacent compensator ports in communication by a longitudinally extending access vent.