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Yankee Hill Machine 9630DX Diamond Series forearm for AR-15. 7.3" length. Diamond-shaped heat vents, extended top rail, T-marked rails; accepts Yankee Hill Machine end caps; anti-rotation screws; 6061-T6 aluminum; hardcoat anodized; includes jam nut, barrel nut, and anti-rotation screws.
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$133.50
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$133.50
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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
An overview of AR-15 handguard and rail systems, comparing M-LOK and Picatinny attachment standards and the tradeoffs between free-float and drop-in designs.
7 min read