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conversion kit 7.5

  1. 5.56×45mm
    Hey so I've got a question about buying a conversion kit. Currently I've got a XCR-L in 556 11" barrel, exposed gas block option, std upper length After shooting my friends 7.5" ar15, I realize now after using it I want to go much smaller and make a very compact PDW build (wish I bought this...
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