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Yankee Hill Machine Co Suppressor Gas Block, .750 diameter, phosphate finish, Black. AR-15 gas block designed for a 0.750 diameter journal with a phosphate finish for corrosion resistance and a matte black appearance.
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A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
A neutral explanation of gas system length tradeoffs, port pressures, and how these design decisions affect reliability, recoil, and parts wear.
5 min read