This guide details the process of installing an AR-15 free-float handguard, focusing on the AT3 Spear M-LOK and Aero Precision Atlas systems. It emphasizes proper alignment, torque specifications (40 inch-pounds for primary fasteners), and the use of threadlocker for secure installation. The instruction comes from AT3 Tactical, a known manufacturer, demonstrating high technical knowledge in AR-15 assembly.
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