Stern Defense SD BU40 Bolt Carrier for AR15/M16 Black 004-SD BU40-D2-M. These Bolt Carrier Groups made by Stern Defense are built out of 8620 AISI steel and Mag-Phosphate finished to ensure a strong reliable part that will withstand repeated firings...

In stock
  • ShipAmount
  • $0.00
  • RevType
  • 2
  • Manufacturer
  • Stern Defense
  • Sku
  • 004SDBU40D2M
  • Identity
  • 11106587829

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