SureFire Optimized Bolt Carrier Group Spring for M4/M16/AR-Variant Rifles & Carbines SF-OBC-556-SPRING. Its patented design allows more time for reliable feeding of ammunition from the magazine and nearly eliminating bolt-over-base malfunctions. The...

In stock
  • ShipAmount
  • $6.99
  • RevType
  • 2
  • Manufacturer
  • SureFire
  • Sku
  • SFOBC556SPRING
  • Identity
  • 35260684149

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