Shop by Caliber > AR-15 & LR-308/AR-10 Upper Build Kits


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5.56 NATO > AR-15 Upper Build Kit
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.223 Wylde > AR-15 Upper Build Kits
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.300 Blackout > AR-15 Upper Build Kits
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9mm > AR-15 Upper Build Kits
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7.62x39 > AR-15 Upper Build Kits
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