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Install a FailZero M16/M4 Bolt Carrier Group BCG, No Hammer to guarantee your rifle performs in any situation. These Bolt Carrier Groups made by FailZero come fully-assembled for easy drop-in installation on most Mil-Spec upper receivers. All essential components of the FailZero M16/M4 5.56/.223 Bolt Carrier Group BCG, No Hammer are treated with an EXO Nickel Boron coating that creates permanent dry lubricity while greatly enhancing both the strength and corrosion resistance of the parts. With reduced friction, your weapon's overall performance will definitely improve. Get the FailZero M16/M4 Full-Auto BCG - No Hammer to ensure your weapon is performing at its potential.![]()
| Manufacturer: | FailZero |
| Finish: | Nickel Boron |
| Fabric/Material: | Steel |
| Carrier Material: | 8620 Steel |
| Bolt Material: | Steel |
| Gun Make: | AR Platform |
| Gun Model: | M16, M4, AR-15 |
| Condition: | New |