EMG x Retro Arms CNC Machined Aluminum Rotary Hop-Up Unit for M4/M16 Series Airsoft AEGs (Color: Limited Edition "Frozen")

Features

• Limited edition "frozen" blue design
• Individually engraved with unique numbers from 1 - 100!
• CNC machined construction
• Rotary design allows for easy adjustment
• Constructed from EN AW 7075 for extended lifespan
• All necessary hardware included
• Bucking not included

Compatibility: Most M4 series Airsoft AEGs
Material: Aluminum alloy