CNC S45C Steel Construction 
Suitable for WE M4/M16 Series Airsoft Gas Blow Back GBB Rifle 
Titanium Coating
Design for Upgrade your Original Bolt Carrier 
CNC S45C Steel Construction 
Suitable for WE M4/M16 Series Airsoft Gas Blow Back GBB Rifle 
Titanium Coating
Design for Upgrade your Original Bolt Carrier