Patent ID: 8584575
Filing Date: 2013-11-19
Classification: F41A

Abstract:
1. A method comprising: directing gas from a barrel of a firearm upward through a barrel gas port; routing the gas from the barrel gas port to a gas jet block comprising a gas operation tube docking port and a gas jet; directing the gas through the gas jet and into a gas operation tube docked in the gas operation tube docking port and engaged with the gas jet; directing the gas through the gas operation tube to a bolt carrier assembly, to which the gas operation tube is fixed, to move at least a portion of the bolt carrier assembly relative to the barrel, the movement of the at least a portion of the bolt carrier assembly causing the gas operation tube to axially translate within the docking port such that it disengages from the gas jet as a function of gas pressure in the bolt carrier assembly; and venting gas from the gas jet block through the gas jet when the gas operation tube disengages from the gas jet.