American Built Arms Bolt Assembly AR-15 223 Remington, 5.56x45mm Nickel Boron

  • Product #: 859134
  • American Built Arms #: ABA5.56B
  • UPC #: 859143003436
American Built Arms Bolt Assembly AR-15 223 Remington, 5.56x45mm Nickel Boron
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4 at this price
MSRP: $79.99
Ships tomorrow from MidwayUSA

Product Overview


  • Nickel Boron Coated
  • Heat treated
  • Shot Peened
  • MPI tested
  • Carpenter 158 Steel Bolt
  • Aircraft Quality E4140 Steel Extractor


American Built Arms A*B Pro Bolt Assembly is built to Mil-Spec dimensions. The Nickel Boron coated bolt needs virtually no lube during use. The Manganese Phosphate coated extractor has a surface finish that provides superior extraction during firing.


These bolt assemblies are ready to drop into your bolt carrier group. These Bolts are specially made on high end Swiss machinery to have exacting tolerances and surface finish. A*B Arms is known by rifle manufacturers for manufacturing one of the finest quality bolts and extractors available.



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Delivery Information

Must Ship to FFL Dealer Yes
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Ships Alone Yes
Oversized Yes
DOT- Regulated Yes
Carrier Restrictions
  • Cannot ship via air
  • Cannot ship via USPS
  • Cannot ship to PO Box
  • Must ship to Contiguous US
HazMat Product Yes

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