Piston Head DURAL

AirsoftParts DURAL Piston Head With Axial Ball Bearing
The front features 9 ventilation holes through which air flows beneath the sealing O-ring during compression. The pressure expands the O-ring towards the cylinder wall, helping to provide an effective seal for the piston assembly. The head weighs only 10.8 g and its surface is finished with high-quality nickel plating for a very smooth surface. The design also incorporates an axial ball bearing that allows the spring to rotate more freely during compression, reducing unwanted twisting and contributing to longer spring life. The plastic nut helps reduce the overall weight of the assembly. According to the manufacturer, the piston head is compatible with all types of gearboxes. In a test with a standard air seal system and an M120 spring, the manufacturer measured an approximate muzzle velocity increase of 5 m/s, although the actual performance change always depends on the air seal, cylinder, nozzle, barrel and other components of the specific build.
Key Features

9 Holes for Pressure-Assisted Sealing
Air flowing through the 9 holes in the front expands the sealing O-ring against the cylinder wall, helping to provide an effective seal for the piston assembly during compression.

CNC-Machined EN AW 6012 T6 Duralumin
The piston head is CNC-machined from EN AW 6012 T6 duralumin, which offers a suitable combination of strength, durability and low weight.

Axial Ball Bearing
The integrated axial ball bearing allows the spring to rotate during compression, reducing torsional stress and contributing to longer spring life.

Smooth Nickel-Plated Surface
The high-quality nickel-plated finish creates a very smooth surface on the piston head while also protecting the duralumin component..