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5.56mm NATO chamber for 5.56mm and .223 caliber
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.223 wylde chamber for 5.56mm and .223 caliber
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.223 wylde chamber for 5.56mm and .223 caliber
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5.56mm NATO chamber for 5.56mm and .223 caliber
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.223 wylde chamber for 5.56mm and .223 caliber
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.223 wylde chamber for 5.56mm and .223 caliber
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.223 wylde chamber for 5.56mm and .223 caliber
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