Aero Precision 5.56 Bolt Carrier Group, Complete - Black Nitride
This high quality bolt carrier group is a valuable addition to your AR15 build.Features:M16-cut carrierMachined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)Carrier has forward assist serrationsBlack Nitride Finish - advanced lower friction coating that minimizes the need for lubricants and cleaningProperly staked gas keyShot peenedHPT tested/MPI markedBlack o-ring insert on extractorHigh quality BCG
