Adjustable Carrier

摘要

Disclosed herein is a modified rifle bolt carrier allowing a selectively openable vent/valve at the location where exhaust gas is pressurizing the bolt carrier to control carrier speed under suppressed fire in a first valve position or unsuppressed fire in a second valve position. A valve core is disclosed which may be rotated 180° to an “open” setting for non-suppressed fire from its position in a “closed” position for suppressed fire. The modified bolt carrier will allow an operator of the firearm to adjust for a suppressor without changing the gas block or having to modify or adapt the front end of the firearm.

主权项

1. A gas operated firing assembly for a firearm, the assembly comprising;
a bolt carrier having a longitudinal axis; a surface defining a vertical gas port orthogonal to the bolt carrier longitudinal axis; a surface of the bolt carrier defining a lateral valve housing orthogonal and intersecting the vertical gas port and orthogonal to the bolt carrier longitudinal axis; a valve core having an outer surface in close sliding fit to the valve housing so as to rotate therein without appreciable gas transfer there between the outer surface and the valve housing; and the valve core having a surface at least partially and selectively controls flow thorough the vertical gas port.