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Forged 7075-T6 aluminum M4 stripped upper receiver. Features M4 feed ramps and a black anodized finish. Stripped so you can complete your AR build. Compatible with standard mil-spec AR lowers and components. Cartridges supported: 223 Remington, 5.56 NATO. Finish: Black.
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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.
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Guide
A neutral guide to component strategies for left-handed shooters, left-eye dominant right-handed shooters, and those managing eye/hand dominance mismatches. Covers ambi uppers, charging handles, gas system tuning, and real-world tradeoffs.
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