These are custom CBB QPQ/Melonite treated bolt carrier groups
The bolt is made from 9310 steel and is QPQ/Melonite treated
The carrier is made from 8620 steel and includes an installed and properly staked gas key.
They are faceted to add more dimension when viewing through the port door.
There are full auto bolt carriers and are legal for use in your semi auto AR15.
These carriers are QPQ/Melonite treated
It resist corrosion, is very easy to clean, provides increased lubrication, reduces friction, resist wear and provides cooler operation.
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These are custom CBB Extreme Melonite treated bolt carrier groups
The bolt is is an Maxim Firearms 6.5 9310 .136 recess Bolt.
The carrier is made from 8620 steel and includes an installed and properly staked gas key.
They are faceted to add more dimension when viewing through the port door.
There are full auto bolt carriers and are legal for use in your semi auto AR15.
These carriers are QPQ/Melonite treated.
It resist corrosion, is very easy to clean, provides increased lubrication, reduces friction, resist wear and provides cooler operation.
*These DO NOT work with a 7.62x39 or any .125 recess rifle.
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These are custom CBB Extreme Nickel-Boron coated bolt carrier groups
The carrier is made from 8620 steel and includes an installed and properly staked gas key.
They are faceted to add more dimension when viewing through the port door.
The bolt is an ARP Nickel Boron Super Bolt.
There are full auto bolt carriers and are legal for use in your semi auto AR15.
These carriers are treated with nickel boron by Fail Zero.
The Nickel Boron finish on these carriers provides a shiny chrome like finish. It resist corrosion, is very easy to clean, provides increased lubrication, reduces friction, resist wear and provides cooler operation.
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