This guide details the process of upgrading a Sig Sauer P320 platform, specifically focusing on the M18X configuration, by integrating X-series components. It covers the installation of an X-series grip module, flared magazine well, straight flat trigger, and optic-ready rear sight plate. The modularity of the P320 platform allows for these performance enhancements, merging military specifications with high-performance features. Instruction is provided by firearm experts James Reeves and Jason St. John from Sig Sauer.
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