Replica Air Guns

Matrix CNC Machined Aluminum Rotary Hop-Up Unit For M4 Series Airsoft AEGs By SHS

Total: $39.99

The SHS metal M4 hop up chamber is a replacement or upgrade chamber to your stock one. The camber is easy to install and works with standard version 2 gear boxes.


  • Rotary design allows for easy adjustment
  • Constructed from EN AW 7075 for extended lifespan
  • All necessary hardware included
  • Hop-up spacer integrated into hop-up arm
  • Bucking not included

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