Timing, fastening, and sealing features for firearm gas blocks

Abstract

A gas block assembly may include a gas block including a gas port to receive gas provided by a gas port of a barrel; a tapered fastener opening; and a tapered fastener insertable in the tapered fastener opening, the tapered fastener including: a length further including a tapered section to contact a sidewall that defines the tapered fastener opening; and means for rotationally driving the tapered fastener into the tapered fastener opening. In other embodiments, an adjustable gas block includes sealing ring(s) on a groove in a rotationally actuated gas metering shaft.

1 . An apparatus, comprising:
 a tapered fastener to mount a barrel-mountable device to a barrel, in a rotationally timed position, the tapered fastener including:
 a length further including a tapered section configured to lockup with one or more sloped surfaces defined by part of an exterior of a barrel of a firearm; and 
 a drive mechanism for rotationally driving the tapered fastener into an opening. 
   
     
     
         2 . A barrel-mounted device comprising the apparatus of  claim 1 . 
     
     
         3 . A gas block assembly comprising the apparatus of  claim 1 . 
     
     
         4 . A gas block assembly, comprising:
 a gas block including a gas port to receive gas provided by a gas port;   a tapered fastener including:
 a length further including a tapered section configured to lockup with one or more sloped surfaces defined by part of an exterior of a barrel; and 
 a drive mechanism for rotationally driving the tapered fastener into an opening. 
   
     
     
         5 . The gas block assembly of  claim 4 , wherein the driving mechanism is located on an end of the tapered fastener, and wherein an opposite end of the tapered fastener includes an additional section arranged to mate with a groove defined by the barrel. 
     
     
         6 . The gas block assembly of  claim 5 , wherein the groove comprise a V-slot. 
     
     
         7 . The gas block assembly of claim  8 , wherein the gas block comprises an adjustable gas block that is adjustable using a rotationally actuated gas metering shaft.