FailZero has turned cutting edge technology into one of the best weapon upgrades on the planet! UCT Coatings’ patented EXO technology is DoD tested, approved and guaranteed to improve the performance and realiability of your firearms.

Mil-spec quality upgrades for AR15, M16 and M4 firearms
Consistent performance under all conditions
Cleaner operation for superior reliability
Lube-free mission critical parts
FailZero offers EXO Nickel Boron coated Bolt Carrier Groups as complete “drop-in kits” and BCG components. For details, go to our Buy Now page!