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.
This guide details the use of anti-seize compound to resolve barrel nut timing issues during firearm assembly, a common problem when components don't align correctly. Instruction comes from an expert at Brownells, emphasizing the compound's role in reducing friction and facilitating precise alignment of critical parts like sights and gas ports. The technique is applicable to various firearm types and also aids in future disassembly.
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