The CQR polymer lower receiver, with either Mod 1 or Mod 2 trademarks, are standard replacement receivers for all CQR AEGs, but will fit all KM4 rifles.
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nYou can specify whether you would like the Mod 1 or Mod 2 trademarks on the side of the receiver by entering a note at checkout. If no note is present, you will receive either receiver, but please note that the receivers are otherwise identical.
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