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Fail Zero M16/M4 Full Auto Basic BCG Kit with Hammer EXO Finish 009-FZM16/4-01

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A completely assembled, ready to install M16/M4 full-auto bolt and carrier system. Kit includes six critical parts that are treated with EXO Technology, a revolutionary surface technology that provides permanent dry lubricity, radically improves the performance of your M16/4 and eliminates the need to apply oil or grease to treated parts for the life of the weapon.

Specifications and Features:
Bolt Carrier
Cam Pin
Carrier Key
Firing pin
EXO Nickel Boron coated

Total number of Reviews: 1

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1.0 5
"I purchased this for an AR build I was doing. This BCG failed to chamber. And seized up in the upper receiver. Returning now."