This guide details the inspection and preparation of AR-15 carrier keys, emphasizing critical dimensions, surface trueness, and internal finish. Proper gauging, stoning the bottom for a flat seal, and polishing the funnel improve gas system efficiency and longevity. The instructor highlights the importance of a good seal to prevent gas blow-by and wear on the gas tube.
This video details the purpose and installation of the Forward Control Designs SCP (SOTAR Cam Pin), a collaboration with School of the American Rifle. The SCP cam pin features a machined dimple to ensure consistent orientation during installation, which helps minimize wear on both the cam pin and the bolt carrier group's internal bore. Proper orientation prevents accelerated wear and potential bolt breakage.
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