Throwback Thursday: AR-15 .223 vs Mil-Spec 5.56mm Chambers
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223 Remington - Wikipedia
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223 Remington - Wikipedia
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223 Remington - Wikipedia
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File:222 vs 223.jpg - Wikimedia Commons
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File:22LR-9-45-223-3006-12gu-LipGloss.jpg - Wikimedia Commons
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