FailZero Nickel Boron BCG

FailZero pioneered the widespread adoption of nickel boron coatings in AR-15 bolt carrier groups with their proprietary EXO technology. The EXO coating provides permanent dry lubricity to all critical surfaces, dramatically improving corrosion resistance, wear resistance, and heat tolerance compared to traditional phosphate finishes. This coating is applied through an electroless deposition process that creates a uniform layer on all surfaces, inside and out, ensuring consistent performance even in hard-to-reach areas.

The defining characteristic of FailZero's EXO technology is its ability to function reliably without external lubrication. While light lubrication is still recommended for optimal performance, these BCGs can run dry in emergency situations without the immediate failures that would plague standard phosphate carriers. The coating's low-friction surface reduces heat buildup, minimizes wear on reciprocating parts, and enables smoother cycling that translates to improved reliability and shooter comfort.

Cleaning is remarkably simple with the EXO nickel boron surface. Carbon deposits that would require aggressive scrubbing and solvents on phosphate finishes simply wipe away from the slick nickel boron surface. FailZero fits perfectly into any mil-spec upper receiver and provides smooth chambering with reduced friction between rounds. The coating is Department of Defense tested and approved, delivering proven reliability even in harsh operational environments. Each BCG undergoes MPI testing and features an enhanced carrier design for long-term durability.