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Ar upper question

Discussion in 'Rifle Discussion' started by parsons_12b, Apr 16, 2009.

  1. parsons_12b

    parsons_12b LaPine Oregon Well-Known Member

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    What differance does M4 ramp cuts make in a upper does it effect what kind of barrel you can put in the reciever?
     
  2. eldbillbo

    eldbillbo clackamas New world samurai and a redneck none the less Bronze Supporter

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