The FailZero Basic Semi-Auto Kit provides a bolt carrier group and hammer treated with FailZero’s proprietary nickel boron EXO coating.
- Part Type: Bolt Carrier Group & Hammer Set
- Compatible Firearms: AR-15 / M16 semi-automatic rifles
- Material: Steel with nickel boron EXO coating
- Finish: FailZero EXO nickel boron
- Installation: Drop-in (basic AR-15 knowledge recommended)
- Includes: Bolt carrier group, hammer
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