OPTac 8.5mm Version Metal Hop-up integrated Aluminum Alloy Inner Barrel

Package:

• Integrated Hop-up barrel
  
• Grub screws & allen key

Features:

• Aluminum Alloy Material (Barrel & Hop-up)
  
• Integrated Hop-Up allows to go through flash hider and outer barrel
  
• Outer diameter of main body 8.5mm
• Outer diameter of hop-up front end 10mm
• Length of hop up front end 30mm
• Inner diameter 7.5mm
• Total length 50 cm
  
• Compatiable with Double Bell/ King Arms TWS GBBR
  
• Recommend use WAT Clear pack gels and gels stopper
• Perfect for 7.15-7.35mm gel ball
  

We recommend 30mm hop up front end leave in out side of the outer barrel and hide by flash hider