CMMG MK4 Buffer Tube.


Out of stock

SKU: CMMG-MK4-B Category:


  • For AR-15 Rifle builds
  • Constructed from aluminum

The CMMG AR-15 MK4 Carbine Length Receiver Extension is the perfect must have accessory for your next AR-15 build. The CMMG tube is constructed from high quality aluminum and features a hard coat anodized matte black finish.


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