This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most LR-308 / AR-10 upper receivers. All critcal parts are coated with EXO Nickel Boron technology that provides permanents dr...>> Read More
This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most LR-308 / AR-10 upper receivers. All critcal parts are coated with EXO Nickel Boron technology that provides permanents dry lubricity, extreme durability, increase wear and corrosion resistance. Our patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle.
All Fail Zero bolts are MPI tested and live fire tested. They do not do HPT, as they feel live fire is a better test.