FailZero
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Fz 450 Bushmaster No Hammer Nib
FailZero
$178.42This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec .450 Bushmaster Upper Receivers. All critical parts are coated with EXO Nickel Boron technology that provides...$178.42 -
Fz 458 Socom Bcg No Hammer Nib
FailZero
$178.42This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec .458 SOCOM Upper Receivers. All critical parts are coated with EXO Nickel Boron technology that provides...$178.42 -
Fz 6.5gren Bcg No Hammer Nib
FailZero
$178.42This 6.5 Grendel Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-Spec upper receivers chambered in 6.5 Grendel (Type 2). All critical parts are coated with EXO Nickel...$178.42 -
Fz 6.8spc Bcg No Hammer Nib
FailZero
$178.42This 6.8 SPC Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-Spec upper receivers chambered in 6.8 SPC. All critical parts are coated with EXO Nickel Boron technology...$178.42 -
Fz 6mm Arc Bcg No Hammer Nib
FailZero
$178.42This 6MM ARC Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-Spec upper receivers chambered in 6MM ARC. All critical parts are coated with EXO Nickel Boron Technology...$178.42 -
Fz 7.62x39 Bcg No Hammer Nib
FailZero
$178.42This 7.62x39 Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil-spec upper receivers chambered in 7.62x39. All critical parts are coated with EXO Nickel Boron technology...$178.42 -
Fz 9mm Bcg No Hammer Blk Nitride
FailZero
$171.01This 9mm Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero Black Nitride 9mm BCG is compatible with both lowers designated...$171.01 -
Fz 9mm Bcg No Hammer Nickel Boron
FailZero
$213.78This 9mm AR Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero 9mm BCG is compatible with both lowers designated for Glock or...$213.78 -
Fz Ar10 Bcg No Hammer Blk
FailZero
$270.41This AR10 Black Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Spec AR10 upper receivers. All critical parts are coated with EXO Nickel Boron Technology that provides...$270.41 -
Fz Ar10 Bcg No Hammer Nib
FailZero
$255.83This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR10 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent...$255.83 -
Fz Ar15 Bcg No Hammer Matte
FailZero
$163.61This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent...$163.61 -
Fz Ar15 Bolt Carrier Group
FailZero
$148.79This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent...$148.79