FailZero M16/M4 AR-15 BCG No Hammer Nickel Boron Black
FailZero
$150.69
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FailZero
FailZero M16/M4 AR-15 BCG No Hammer Nickel Boron Black
The FailZero M16/M4 AR-15 Bolt Carrier Group with No Hammer in Nickel Boron Black delivers mil-spec reliability with a next-generation EXO coating that redefines what a drop-in BCG can do. Engineered for shooters who demand consistent performance with minimal maintenance, this BCG is built to run hard and stay clean.
- EXO Nickel Boron coating provides permanent dry lubricity without added oil
- Fully assembled and drop-in ready for mil-spec M16, M4, and AR-15 uppers
- Extreme wear resistance extends service life well beyond standard BCGs
- Superior corrosion resistance protects against moisture, sweat, and fouling
- No-hammer configuration ideal for custom builds and lower receiver upgrades
- Smooth, self-lubricating surface dramatically reduces cleaning time and effort
Who This Is For
This BCG is the ideal choice for AR-15 builders and enthusiasts who want a low-maintenance, high-reliability bolt carrier group that performs straight out of the box. Whether you're completing a custom build, replacing a worn-out BCG, or upgrading to a more durable coating technology, the FailZero Nickel Boron Black BCG suits competitive shooters, home defenders, and range-day regulars who refuse to compromise on quality. The no-hammer version is specifically suited for builders who are sourcing or upgrading their hammer separately.
Specifications
| Brand | FailZero |
|---|---|
| Model | M16/M4 AR-15 BCG No Hammer |
| Finish | EXO Nickel Boron Black |
| Configuration | No Hammer |
| Compatibility | Mil-Spec M16, M4, AR-15 Upper Receivers |
| Caliber | 5.56 NATO / .223 Rem |
| Material | Steel with EXO NiB Coating |
| Assembly | Fully Assembled (less hammer) |
| Coating Properties | Dry Lubricity, Corrosion & Wear Resistant |
| Country of Origin | USA |
Frequently Asked Questions
What does "No Hammer" mean, and will this BCG work with my existing lower receiver?
The "No Hammer" designation means this bolt carrier group ships without a hammer included. The BCG itself — including the bolt, carrier, cam pin, firing pin, and retaining pin — is fully assembled and ready to install. It is compatible with any standard mil-spec AR-15 or M16/M4 lower receiver that has its own hammer already installed. This configuration is popular among builders who are pairing the BCG with a custom trigger group or upgrading the hammer separately.
Do I need to lubricate a Nickel Boron BCG before use?
One of the standout benefits of FailZero's EXO Nickel Boron coating is its permanent dry lubricity, meaning the surface is inherently slick and self-lubricating at a molecular level. While a light application of oil is never harmful, many users run these BCGs with little to no lubrication and experience smooth, reliable cycling. This makes the FailZero BCG especially appealing for duty use, competition shooting, or any situation where frequent cleaning isn't practical.
How does the EXO Nickel Boron coating compare to standard phosphate or chrome-lined BCGs?
Standard phosphate (parkerized) BCGs are durable but have a porous surface that traps carbon fouling and requires regular lubrication. Chrome-lined BCGs offer good corrosion resistance but still need oil to cycle reliably. FailZero's EXO Nickel Boron coating outperforms both by providing a harder, smoother surface that resists carbon adhesion, cleans up with minimal effort, and reduces friction without relying on liquid lubricants. The result is a BCG that stays cleaner longer and is significantly easier to maintain over thousands of rounds.
