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Availability: In Stock
A drop-in bolt carrier group for AR-15 builds that runs cleaner and lasts longer: the FailZero AR-15 BCG with EXO Nickel Boron coating. This fully assembled, mil-spec compatible unit comes ready to install into most standard AR-15 upper receivers—no additional fitting or parts needed. The nickel boron finish is applied to all critical contact surfaces (bolt, carrier, extractor, firing pin, cam pin, and carrier key), dramatically reducing friction and buildup that typically slows down semi-auto and full-auto rifles. That means less fouling, easier cleaning, and reliable performance across high round counts.
Nickel boron isn't just a slick finish; it's engineered for durability and corrosion resistance in ways plain steel or even hard-chrome can't match. The permanent dry lubricity means your rifle functions smoothly without relying on heavy oil, which is especially useful in dusty, sandy, or cold conditions where conventional lubrication can gum up or migrate away. You'll notice tighter bolt lockup, reduced wear on carrier surfaces, and a noticeably smoother cycling action.
This no-hammer configuration is built for shooters who want a complete BCG without the integrated hammer assembly, giving you flexibility in your firing group setup. Compatible with 5.56 NATO, .223 Remington, and 300 Blackout ammunition, it's equally at home on a precision rifle, a tactical AR, or a high-volume range gun. Fully assembled and tested, it drops straight in and runs.
| Type | Bolt Carrier Group |
| Finish | EXO Nickel Boron (Nickel) |
| Configuration | No Hammer, Fully Assembled |
| Compatibility | Mil-spec AR-15 upper receivers |
| Ammunition | 5.56 NATO, .223 Remington, 300 Blackout |
| Coated Components | Bolt, Carrier, Extractor, Firing Pin, Cam Pin, Carrier Key |
| Model Number | 009-FZAR15-01-NH |
The FailZero AR-15 BCG arrives fully assembled and ready to drop into most mil-spec AR-15 upper receivers. No additional fitting, tuning, or parts assembly required—install and run.
This BCG is compatible with 5.56 NATO, .223 Remington, and 300 Blackout ammunition.
The permanent dry lubricity of EXO Nickel Boron dramatically reduces fouling buildup and carbon accumulation on the carrier and bolt. You'll spend less time scrubbing and more time shooting, especially during high round-count sessions.
Nickel boron provides superior corrosion resistance, lower friction, and durability compared to bare steel. It also functions reliably with minimal lubrication, making it ideal for rifles used in harsh or demanding conditions.
SKU: 115789563 • Width: 3.5in • Height: 2.5in • Depth: 11in • Weight: 0.94oz
Availability: In Stock
A drop-in bolt carrier group for AR-15 builds that runs cleaner and lasts longer: the FailZero AR-15 BCG with EXO Nickel Boron coating. This fully assembled, mil-spec compatible unit comes ready to install into most standard AR-15 upper receivers—no additional fitting or parts needed. The nickel boron finish is applied to all critical contact surfaces (bolt, carrier, extractor, firing pin, cam pin, and carrier key), dramatically reducing friction and buildup that typically slows down semi-auto and full-auto rifles. That means less fouling, easier cleaning, and reliable performance across high round counts.
Nickel boron isn't just a slick finish; it's engineered for durability and corrosion resistance in ways plain steel or even hard-chrome can't match. The permanent dry lubricity means your rifle functions smoothly without relying on heavy oil, which is especially useful in dusty, sandy, or cold conditions where conventional lubrication can gum up or migrate away. You'll notice tighter bolt lockup, reduced wear on carrier surfaces, and a noticeably smoother cycling action.
This no-hammer configuration is built for shooters who want a complete BCG without the integrated hammer assembly, giving you flexibility in your firing group setup. Compatible with 5.56 NATO, .223 Remington, and 300 Blackout ammunition, it's equally at home on a precision rifle, a tactical AR, or a high-volume range gun. Fully assembled and tested, it drops straight in and runs.
| Type | Bolt Carrier Group |
| Finish | EXO Nickel Boron (Nickel) |
| Configuration | No Hammer, Fully Assembled |
| Compatibility | Mil-spec AR-15 upper receivers |
| Ammunition | 5.56 NATO, .223 Remington, 300 Blackout |
| Coated Components | Bolt, Carrier, Extractor, Firing Pin, Cam Pin, Carrier Key |
| Model Number | 009-FZAR15-01-NH |
The FailZero AR-15 BCG arrives fully assembled and ready to drop into most mil-spec AR-15 upper receivers. No additional fitting, tuning, or parts assembly required—install and run.
This BCG is compatible with 5.56 NATO, .223 Remington, and 300 Blackout ammunition.
The permanent dry lubricity of EXO Nickel Boron dramatically reduces fouling buildup and carbon accumulation on the carrier and bolt. You'll spend less time scrubbing and more time shooting, especially during high round-count sessions.
Nickel boron provides superior corrosion resistance, lower friction, and durability compared to bare steel. It also functions reliably with minimal lubrication, making it ideal for rifles used in harsh or demanding conditions.
SKU: 115789563 • Width: 3.5in • Height: 2.5in • Depth: 11in • Weight: 0.94oz