Fully assembled and ready to drop into any mil-spec AR-15, M-16 or M-4 upper receiver, this full auto profile bolt carrier group from Fail Zero is a great choice for any upgrade or new build. EXO nickel boron coats all critical parts and provides permanent dry lubricity and corrosion resistance. This coating reduces friction and wear. It is the perfect way to improve the overall performance of any rifle.
- Manufacturer Number: FZ-M164-01-SAH
- 5.56 NATO/.223 Remington compatible bolt and extractor
- Cam pin
- Carrier key
- Firing pin
- Material: Steel
- Finish: Nickel Boron
Rules and Restrictions
The purchasing some of the items in our store are regulated by Federal laws and local restrictions.
- All FFL rules apply. Please check your local State and Federal law before purchase.
- All firearms purchases will be shipped to FFL dealers only, copy of valid ID need to be send to us via email to firstname.lastname@example.org
- Shipping will be Provided By registered shippers only (FedEx, UPS, USPS) with tracking and insurance.
- Alaska: No Ammo.
- California: No Handguns. No Hi-Cap Mags without a Hi-Cap Mag Permit. No Defense/Clip Fed Shotguns. No Semi-Auto rifles. No M-16 Bolts. No Ammo without a FFL.
- Connecticut: No Semi-Auto rifles. As of September 1st we will be re-evaluating the status of the October 1st laws.
- Delaware: BFSIII™ triggers are sold for use in pistols and non-rifle firearms only. Buffer springs and ajustable gass blocks are sold for use in pistols and non-rifle firearms only.
- Florida: As of September 1st we will be re-evaluating the status of the October 1st laws.
- Hawaii: No Pistol Mags over 10rds. No Ammo. No BFSIII™ products.
- Illinois: No Ammo without a FFL.
- Maryland: No Handguns. No Hi-Cap Mags over 20rds. As of September 1st we will be re-evaluating the status of the October 1st laws.
- Massachusetts: No Handguns. No Hi-Cap Mags without an FFL. No Defense/Clip Fed Shotguns. No Semi-Auto rifles. No Ammo.
- New Jersey: No Hi-Cap Mags over 10rds.
- New York State: No Handguns. No Mags over 10rds.
- New York City, Bronx, Brooklyn, Manhattan, Staten Island, & Queens: No Handguns. No Mags over 10rds. No Ammo. No NFA Restricted Items.
- Vermont: No rifle mags over 10rds. No pistol mags over 15rds.
- Washington DC: No Firearms. No Hi-Cap Mags. No Ammo.
- APO & FPO Addresses: No Ammo.