MAXX CNC Aluminum Double O-Ring Ball Bearing AEG Piston Head Capacity-(rds)_420 For use with STORM on

For use with STORM on tank regulators

While the gun itself is made of plastic

zipper down the middle

Tests incrementally you need for a perfect fit

MAXX CNC Aluminum Double O-Ring Ball Bearing AEG Piston Head Capacity-(rds)_420 For use with STORM onKey Feature CNC Aluminum Construction Airsoft Piston Head Double O Ring Ball Bearing Piston Head Double O Ring design for superior air seal & compression Significantly enhances air efficiency Tighter seal = better compression & consistency More durable than stock piston heads Top tier upgrade for high performance builds Players seeking maximum air seal & reliability High speed or high torque builds Compatible For Most Version 2 AEG Gearboxes