FailZero 6.8 SPC Bolt Carrier Group No Hammer NIB AR-15
FailZero
$165.69
(No reviews yet)
Write a Review
FailZero
FailZero 6.8 SPC Bolt Carrier Group No Hammer NIB AR-15
The FailZero 6.8 SPC Bolt Carrier Group (BCG) — No Hammer delivers a fully assembled, drop-in upgrade engineered for shooters who demand maximum reliability and minimal maintenance from their 6.8 SPC-chambered AR-platform rifles.
- EXO Nickel Boron coating provides permanent dry lubricity for smoother cycling
- Fully assembled and ready to install in most Mil-Spec upper receivers
- Extreme wear resistance extends service life under high round counts
- Superior corrosion resistance protects against moisture, sweat, and harsh environments
- Self-lubricating surface reduces the need for frequent cleaning and oiling
- Sold without hammer — ideal for builders sourcing components individually
Who This Is For
This BCG is the ideal choice for AR-platform builders and upgrades who are running a 6.8 SPC configuration and want a low-maintenance, high-durability bolt carrier group. Whether you're assembling a dedicated hunting rifle, a varmint build, or a hard-use tactical setup, the FailZero EXO Nickel Boron finish means less time cleaning and more time shooting. The no-hammer configuration makes it a perfect fit for those who already have a preferred hammer or are sourcing trigger group components separately.
Specifications
| Brand | FailZero |
|---|---|
| Caliber | 6.8 SPC |
| Coating | EXO Nickel Boron (NiB) |
| Configuration | No Hammer (NIB) |
| Compatibility | Mil-Spec AR-platform upper receivers chambered in 6.8 SPC |
| Assembly | Fully assembled |
| Lubrication | Self-lubricating (dry lubricity) |
| Country of Origin | USA |
Frequently Asked Questions
Why doesn't this BCG include a hammer?
The FailZero 6.8 SPC BCG is sold in a "No Hammer" configuration, meaning the hammer is not included in the assembly. This is intentional for builders who prefer to select their own trigger group components — such as a drop-in trigger kit — or who are replacing just the bolt carrier group without needing a new hammer. If you need a complete fire control group, be sure to source a compatible hammer separately before completing your build.
What is EXO Nickel Boron coating and why does it matter?
EXO Nickel Boron is FailZero's proprietary coating technology applied to all critical internal surfaces of the BCG. Unlike traditional coatings, it bonds permanently to the metal, creating an extremely hard, slick surface that reduces friction without the need for added lubricants. The result is smoother cycling, easier cleaning — carbon and fouling wipe away with minimal effort — and significantly improved resistance to corrosion and wear over thousands of rounds.
Will this BCG fit my existing 6.8 SPC upper receiver?
Yes — the FailZero 6.8 SPC BCG is designed to drop into most standard Mil-Spec upper receivers chambered in 6.8 SPC. It is not compatible with 5.56 NATO or .223 Rem uppers, as the bolt face and overall dimensions are specific to the 6.8 SPC cartridge. Always verify that your barrel extension, gas system, and upper receiver are properly configured for 6.8 SPC before installing this BCG.