FailZero

FailZero, M16/M4 Bolt Carrier Group, No Hammer, Black Nitride Coated, Black Finish High quality components and precise manufacturing make FailZero parts ideal for maintaining and upgrading firearms...

FailZero, AR15 Bolt Carrier Group, No Hammer, EXO Nickel Boron Coated, Black Finish Nickel Boron treated Extreme durability Dry lubricity Corrosion resistant This Bolt Carrier Group...

FailZero, M16/M4 Bolt Carrier Group, No Hammer, EXO Nickel Boron Coated, Black Finish Nickel Boron treated Extreme durability Dry lubricity Corrosion resistant This Bolt Carrier Group...

FailZero, M16/M4 Bolt Carrier Group, No Hammer, Completely Assembled, EXO Nickel Boron Coated, Nickel Finish This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec...

Put the latest and greatest technology into your AR-15 rifle, starting with one of the most important parts: the firing pin. This drop in part is coated with the patented EXO technology, and will...

A Nickel Boron coated Semi-Auto Hammer for your AR15 This EXO coated, single-stage, semi-auto hammer provides a permanently lubricious surface for extreme durability, increased wear and corrosion...

This fully assembled and NiB coated (5.56/.223) bolt assembly is compatible with most mil spec AR15, M16, M4 Carriers. EXO Nickel Boron provides permanent dry lubricity; increased wear and corrosion...