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  1. Rainier Arms RUC DI 300BLK Partial Upper Receiver - 10.7"
    Rainier Arms RUC DI 300BLK Partial Upper Receiver - 10.7"
    Special Price $400.00 Regular Price $500.00
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  1. Barrel Length 10.7" Remove This Item
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  4. Twist Rate 1:7 Remove This Item
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