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Black oxide coated AR-15 gas tube. Made from 416 stainless steel with matte black-oxide finish. Compatible with rifle-length and carbine-length gas systems. Includes gas tube roll pin. Standard on YHM-15 firearms.
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$19.99
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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