This video debunks the common belief that an AR-15 barrel nut must be made of steel. Brownells Gun Techs Caleb and Steve explain that the barrel nut's primary function is to lock the barrel into the upper receiver, a task that is not under high stress. They highlight that many high-end manufacturers like Geissele and Battle Arms Development use aluminum barrel nuts, which are proven to be sufficiently strong and also help reduce the overall weight of the firearm. The video concludes that aluminum and titanium barrel nuts are perfectly acceptable alternatives to steel.
This video, the second part of the SmythBusters series, features Bill Geissele of Geissele Automatics addressing the myth of galvanic corrosion in AR-15 firearms. Geissele, drawing on extensive experience with machinery and firearms, explains that the direct contact of bare steel and un-anodized aluminum, which is required for galvanic corrosion, is rarely present in an AR-15 assembly. He shares that after nearly a decade of using Geissele's Super Modular Rail handguard and aluminum barrel nuts, he has found no evidence of such corrosion. The discussion also touches upon the appropriate use of lubricants and anti-seize compounds in threaded joints.
You've reached the end! 2 videos loaded.
