All AR-15 & LR-308/AR-10 > Upper Builds by Caliber

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5.56 NATO AR-15 Upper Builds
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.300 Blackout AR-15 Upper Builds
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9mm AR-15 Upper Builds
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.223 Wylde AR-15 Upper Builds
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7.62x39 AR-15 Upper Builds
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.458 SOCOM AR-15 Upper Builds
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.450 Bushmaster AR-15 Upper Builds
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6.5 Grendel AR-15 Upper Builds
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