FailZero Lightweight EXO Nickel Boron M16 / M4 5.56 Bolt Carrier Group


5.56 NATO, Carpenter 158 Bolt, EXO Nickel Boron Coated, MPI / HP Tested

Availability: In stock

SKU: FZ-LW-BCG-01-NH Categories: , , Tags: , ,

FailZero Lightweight EXO Nickel Boron M16 / M4 5.56 Bolt Carrier Group

The First in Nickel Boron Coated BCG’s

This low mass BCG provides smoother operation and less recoil resulting in faster target reacquisition for quicker follow-up rounds. This is critical in competition shooting and actual tactical situations.

This FZ Lightweight BCG runs as great as it looks! Like all FailZero products it is easier to clean and maintain, and guaranteed for life.

– 21% weight reduction from standard Mil-Spec carrier
– FZ logo engraved into the carrier
– New high polish finish on all components

– Smoother operation! Less mass helps minimize the overall movement and reduces felt recoil
– Lightweight is great for competition shooters as well as hunters looking for lighter gear
– All components are EXO Nickel Boron coated which adds to the smooth operation, extended wear and easier cleaning
– Lighter weight means faster follow up shots and better control of groupings

– Carrier weighs only 6.4 oz and complete BCG is only 9.2 oz
– Compatible in all Mil-spec AR Platforms
– All components are EXO Nickel Boron with a high polish finish
– Compatible with 5.56, .223, and 300 Blackout

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers.  All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance.  Our patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle.

Nickel Boron treated parts include:

  • Bolt & Extractor (5.56/.223 compatible)
  • Lightweight Bolt Carrier
  • Extractor
  • Cam Pin
  • Carrier Key
  • Firing Pin

Product Specifications

Manufacturer: FailZero
Material: 8620 Steel Carrier
Type: M16 Full Auto
Bolt: Carpenter 158
Extractor: D2 Tool Steel
Coating: EXO Nickel Boron
Forward Assist Serrations: Yes
Compatibility: M16 / M4 / AR15
Caliber: Multi | 5.56 NATO, 223 Remington Family
Other: Shot Peened, MPI/HPT Inspected

MSRP: $224.99

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Weight 13 oz
Dimensions 11 × 4 × 1 in


Part Type

Bolt Carrier Group, Upper Receiver Parts




223 Remington, 223 Wylde, 5.56 NATO

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