Bootleg, 5.56 Lightweight Bolt Carrier Group, Machined from 4140, Nitride Coating, Mil Spec Configuration, Staked Mil Spec Gas Key

$2,987.66

Sons of Liberty Gun Works, Bolt Carrier Group, 223 Remington/556NATO, Manganese Phosphate Finish, Black

$4,115.21

$4,596.96