OPTac 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 9.5mm
• Inner diameter 7.5mm
• Length 50 cm/40 cm/65 cm
• 65cm can fit A&K PKM and M60
• Compatiable with all varies AEG Gel Blasters (Except Double Bell)
  
• Can be modified to fit into MWs GBBR Blaster and AW & WE Tech Gas Pistol
• Recommend use WAT Clear pack gels and gels stopper
• Perfect for 7.15-7.35mm gel ball
• Booster Sleeve can cover the hollow front end of the Hop-up barrel and slightly increase the FPS
• Outer diameter of Booster Sleeve is 10mm (make sure outer barrel inner diameter is bigger than 10mm)