One of FailZero's key innovations is their EXO coating technology, which stands for "exolytic treatment." This is a proprietary process that involves treating the surface of the metal with a nickel-boron coating, which results in increased durability, corrosion resistance, and lubricity. This technology is used in many of FailZero's products, including their bolt carrier groups, which are designed to provide smoother cycling, easier cleaning, and improved reliability.
FailZero 6mm ARC/6.5 Grendel Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-Spec upper receivers chambered in 6mm ARC and 6.5 Grendel (Type 2).All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance. EXO Nickel Boron makes for easy cleanup and will improve the performance of your rifle.
Nickel Boron treated parts include:
Bolt & Extractor
M16 Cut Bolt Carrier
Cam Pin
Carrier Key
Firing Pin