WE-Tech Upgrade Kit for v2 to v3 M4 Open Bolt

Specifications

• Materials: Steel, Zinc Alloy, Nylon, Brass, Aluminium
  
• For WE-Tech Version 2 Open Bolt M4 GBBR to convert to V3
• Includes: Hop-Up Chamber, Inner Barrel, Trigger Box, Bolt, Dust Cover, Bolt Lock, Feed Lips, Magazine Output Gasket, Magazine Follower