JMac Customs GBC-13 Gas Block without Detent Hole Black Nitride Black GBC-13-WO. Gas block to replace or upgrade 90 Gas Blocks perfect for 14.5" pin/weld or SBR/Pistol Specifications for JMac Customs GBC-13 Gas Block w/out Detent Hole: Manufacturer:...

In stock
  • ShipAmount
  • $0.00
  • RevType
  • 2
  • Manufacturer
  • JMac Customs
  • Sku
  • GBC13WO
  • Identity
  • 25601777788

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