Modify Aluminum Piston Head with Bearings Works with any standard AEG gearbox. Made of Aircraft aluminum alloy. Made with revolutionary design to be more effective and 100% airtight. It's for Modify/ Systema series Bore-Up Cylinder.
The Bored-up Airsoft Piston Head is compatible with larger cylinders to achieve higher displaced air volume, with rubber bumper to reduce sound and impact.l
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