New Frontier Armory New Frontier C4 Upper Receiver Ar15 Stripped Billet Black. The C-4 Upper Receiver is unique because it was designed with input from former 3rd party contract gunsmiths. Through this process the upper receiver is given a clean...

In stock
  • ShipAmount
  • $0.00
  • RevType
  • 2
  • Manufacturer
  • New Frontier Armory
  • Sku
  • C4UPPERSTD
  • Identity
  • 21334273884

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