AirsoftPro NBU CNC Aluminum Flat Piston Head with Bearing

The AirsoftPro NBU CNC Aluminum Flat Piston Head with Bearing is a durable upgrade piston head designed for New Bore-Up (NBU) air system AEG airsoft guns. It combines a lightweight aluminum body, a ball bearing, and dual O-rings for improved air seal and more precise piston guidance inside the cylinder. It is an excellent choice for building a reliable and high-performance air system.

Aluminium New Bore-up piston head (unlike plastic) for maximum durability. Low weight provides good rate of fire and shooting range. Six air channels at the front of the head conduct compressed air under the O-ring. This cause better sealing . 

Axial bearing provide smooth rotation of the compressed spring and aluminium washer provide great durability and cannot crack as a plastic one. 

Package include piston head, O-ring, aluminium washer, screw and axial bearing.

This is NBU (New Bore Up) version and can be used only with the proper larger cylinder!