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5.56 Nitride Bolt Carrier Group

5.56 Nitride Bolt Carrier Group

$129.99 $69.99
(You save $60.00)
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SKU:
SALE556BCG
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Product Description

  • 5.56 Nitride Bolt Carrier Group
  • Complete M16 bolt carrier group assembly
  • The QPQ nitride/melonite treatment hardends the surface to 70 RC and reduces friction as well as adding corrosion resistance inside and out
  • Superior to chrome lined and parkerized bolt carrier groups
  • MPI tested and marked. 9310 Nitride bolt
  • Corrosion resistance inside and out
  • Side staked gas key with grade 8 fasteners

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