Failzero Fail Zero Bolt Carrier Group BCG .450 Bushmaster Ar-15. The FAILZeroBCG is a .450-caliber bolt carrier group that reliably cycles .450-caliber ammunition without fail or damage. This FAILZeroBCG is purpose-built and built to last. The...

In stock
  • ShipAmount
  • $0.00
  • RevType
  • 2
  • Manufacturer
  • FailZero
  • Sku
  • FZ45001NH
  • Identity
  • 9049630095

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