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CMMG AR15 Receiver Extension/Stock Kit

  • The CMMG AR15 Receiver Extension Stock Kit includes the CMMG 6 Position Receiver Extension, Carbine Buffer Assembly, Carbine Action Spring,  and 6 Position Butt stock Assembly. Combine this kit with your choice of lower parts kit to complete your lower group!
  • Item Specifications
  • The MSR Arms Advisor articles are intended to answer some of the most common shooter questions and assist our customers in making the best purchasing decision possible.
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