Brownells - AR-15 Bolt/Carrier Group

Published on October 25, 2011
Duration: 1:51

This video details the Fail Zero AR-15 Bolt Carrier Group, highlighting its proprietary EXO treatment, a nickel boron coating that provides exceptional hardness, abrasion resistance, and lubricity. The coating reduces friction, heat, and the need for lubrication, allowing for reliable function up to 50,000 rounds. The BCG also undergoes shot peening and magnetic particle inspection for quality assurance, with the gas key meeting USGI specs and being chrome-lined.

Quick Summary

The Fail Zero AR-15 Bolt Carrier Group features a proprietary EXO nickel boron coating, offering a self-lubricating surface that resists dirt and unburned powder. This treatment enhances hardness, abrasion resistance, and lubricity, allowing for reliable function without additional lubrication for up to 50,000 rounds and reducing heat generation for increased part longevity.

Chapters

  1. 00:01Introduction to Fail Zero BCG
  2. 00:08EXO Treatment Explained
  3. 00:16Nickel Boron Coating Benefits
  4. 00:31Reliability Testing and Durability
  5. 00:38Reduced Friction and Heat
  6. 00:48Manufacturing Quality: Shot Peening & Inspection
  7. 00:56Gas Key Specifications
  8. 01:05Complete BCG Components
  9. 01:17Test Firing and Quality Assurance
  10. 01:23Carrier Available Separately
  11. 01:30Brownells Guarantee

Frequently Asked Questions

What is the primary benefit of the Fail Zero AR-15 Bolt Carrier Group's EXO treatment?

The Fail Zero AR-15 Bolt Carrier Group's EXO treatment is a nickel boron coating that provides a self-lubricating surface. This significantly reduces friction, prevents dirt and dust attraction, and enhances reliability, allowing the BCG to function without additional lubrication for up to 50,000 rounds.

How does the EXO treatment improve the durability and performance of an AR-15 bolt carrier group?

The EXO treatment imparts exceptional hardness, abrasion resistance, and lubricity to the metal surfaces. This ultra-low friction coefficient minimizes heat generation from metal-on-metal contact, ensuring the firearm runs cooler and its parts last longer, contributing to overall improved durability and performance.

What quality control measures are taken for the Fail Zero AR-15 Bolt Carrier Group?

Before the EXO treatment, Fail Zero bolt and carrier parts are shot peened for surface uniformity and undergo magnetic particle inspection to identify any hidden flaws. The gas key is hardened to USGI specs and chrome-lined. Each complete BCG is also test-fired for proper function.

What components are included in a complete Fail Zero AR-15 Bolt Carrier Group?

A complete Fail Zero AR-15 Bolt Carrier Group comes fully assembled and ready for installation. It includes the bolt, bolt carrier, firing pin, extractor, cam pin, gas key, and a small pin hammer, ensuring all essential parts are present for immediate use.

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