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

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.

Specifications

• 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