Our take:  The JBU aluminum AEG piston is a high-quality, performance oriented part.  The piston body is crafted out of high-grade lightweight aluminum and features removable/replaceable steel teeth.

Specifications:
- Extremely high stress tolerance ensures operational perfection
- One of the finest upgrade pistons available on the market
- Full tooth design

Disclaimer:  Any and all airsoft upgrade parts purchased from Airsoft Megastore will be used/installed at owner's discretion. Actual performance results depend on quality of installation, airsoft AEG barrel length, tightness of the air nozzle seal, and other possible performance-affecting factors.  We are not responsible for any damage that may occur with improper installation.  For best results, please do all upgrades at a certified professional airsoft technician/shop.

Package weight: 1 lb