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5.56 Nitride Angle Cut Bolt Carrier Group with cryo bolt (SALE)

Out of Stock

$119.99 $79.99
(You save $40.00)

Product Description

  • Complete M16 angle radius cut 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 bolt nitride/melonite treated with additional cryo freeze for extra strength
  • Requires very little lubrication and has a very slick surface
  • Corrosion resistance inside and out
  • Side staked gas key with grade 8 fasteners
  • Product Reviews

    Write Review

    1. Quality at a bargain basement prices

      Posted by Unknown on Dec 22nd 2015

      FInally got my first AR assembly together, using the Spinta precision barrel and bolt. Worked as good as could be asked, the Nitride coating works as advertised. no complaint whatsoever.

    2. Very nice bolt

      Posted by Unknown on Dec 19th 2015

      haven't fired yet, but everything appears to be what it should be

    3. Beautiful

      Posted by Doug on Dec 9th 2015

      The fit and finish is a work of art. Waiting on other parts to complete my build and will provide more feedback after a trip to the range.