This video demonstrates the use of the Mark Brown Custom Gas Tube Gauge for inspecting AR-15 gas tubes. The gauge allows users to check for wear on the gas tube flange without removing it from the rifle. The instructor highlights how to interpret the gauge's markings to identify a worn flange, which can lead to malfunctions. A newer stainless steel version of the gauge is also mentioned as an improvement over older models.
You've reached the end! 1 videos loaded.
Gun Laws by State
Read firearms regulations for all 50 states + D.C.
Find Gun Dealers
Search licensed FFL dealers near you.
