This guide details the installation of a Yankee Hill Machine Diamond Free Float Rail on an AR-15 platform, replacing a Troy MRFC handguard. The process involves careful disassembly, precise torque specifications for the barrel nut (30-80 ft-lbs), proper gas block alignment, and securing the handguard with anti-rotation screws. The instruction is delivered with high authority, demonstrating professional-level DIY firearm maintenance skills.
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