diameter 42 mm

retractable stock with easy access to the battery compartment

*This product comes with an orange outer barrel out of the box – replacement black barrel featured in the product image sold separately

Type: Rocket 19 tooth piston

Umarex / BCM Air and other VFC spec Gear boxes

MECHBOX PRO CNC Aluminum Cylinder Head PDI diameter 42 mmFeatures: Precision CNC Aluminum Construction Double O Ring for better air seal and reduced compression loss Polished stem for smooth cycling with nozzle while maintaining best air seal Built In rubber bumper for shock absorption from piston piston head Squared stem angle to ensure best air seal with air nozzle Compatibility: Most Gen 2 AEG Gearboxes Material: 6061T6 Aluminum Alloy