CMMG 55CA9D7 Receiver Extension MK4 Steel

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Product Description

This Receiver Extension is for your MK4 and is constructed of steel with a black finish.

Specifications and Features:

  • CMMG AR-15 Receiver Extension M4 55CA9D7
  • Compatible with all Mil-Spec diameter stocks
  • Aluminum
  • Hard Coat Anodized Finish
  • Matte Black

This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.