The FPS Ergal piston head is a great upgrade that will increase airflow efficiency through the cylinder. This piston head has ports on the front to push out the o-ring as it moves forward, this ensures that all of the air in the cylinder is being pushed out to propel the BB.

Combined with a bearing spring guide, the ball bearings reduce rotational tension on the spring. This product is designed and manufactured in Italy, CNC machined out of ERGAL (aluminium 7075) for durability.

• Weight: 5.13 grams
• Compatibility: Tokyo Marui Automatic Electric Pistol (AEP) series