Iron City Rifle Works EXO Nickel Boron AR-15 Bolt Assembly

Iron City Rifle Works EXO Nickel Boron AR-15 Bolt Assembly

Product Code:
Calculated at Checkout
$114.99 $109.24


  • Case Hardened, Shot Peened and MPI (Magnetic Particle Inspected)
  • All components are Mil-Spec


  • Caliber: 5.56 NATO / .223 Rem / 300 Blackout
  • Material: 158 Carpenter Steel
  • Finish: EXO Nickel Boron
  • Weight: 1.52 oz.


  • AR-15 Bolt Carrier


  • 1x EXO Coated Bolt
  • 1x EXO Coated Extractor (assembled)
  • 1x Extractor Spring (assembled)
  • 1x Extractor Pin (assembled)
  • 1x Ejector (assembled)
  • 1x Ejector Spring (assembled)
  • 1x Gas Rings (assembled)


The bolt of an AR15 should always be of the highest quality possible due to its central role in the functioning of the weapon. Iron City Rifle Works designed this EXO nickel boron bolt for both professionals and enthusiasts who cannot tolerate failure from any part of their AR15.

This EXO nickel boron bolt goes through case hardening and shot peening procedures. They are completed with a magnetic particle inspection phase to ensure that they conform to Iron City's rigid specifications. The EXO nickel boron coating provides a robust layer of protection that won't wear away even under the heaviest use. In addition to that, it adds lubricity to the surface, reducing friction and increasing the lifetime of the parts. It also makes cleanup much quicker and easier by preventing the buildup of fouling. You can take off most of the fouling by simply wiping it down with a few patches! Both the bolt and extractor undergo this coating procedure.

Don't settle for any sub-par components in your AR15; get yourself the Iron City Rifle Works EXO Nickel Boron Bolt Assembly!

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