Epes AEG Piston Head (Dural H + PTFE) The Epes AEG Piston Head combines aerospace-grade duraluminium with a PTFE coating to deliver a durable, low-friction upgrade for airsoft gearbox systems. Designed for players and technicians seeking reliable performance under high spring pressures, it pairs precision engineering with practical gearing benefits. Material: Dural aluminium (Dural EN-AW 7075-T6) for exceptional strength-to-weight balance. Coating: PTFE (Teflon) coating reduces friction inside the cylinder, promoting smoother cycling and longer component life. Ventilation: 11 vent holes that prevent air lock during cycling, aiding consistent compression and operation. Seals: Double O-ring seal to minimize air loss and keep the piston perfectly aligned within the cylinder. Bearing: Ball bearing attached to rotate with the spring, helping to resist deformation under pressure and maintain tuning stability. Compatibility: Safe for use with up to M140 springs, making it suitable for high-torque builds while maintaining reliability. Benefits: With aerospace-grade materials and a PTFE coating, this piston head reduces friction, lowers wear, and preserves cylinder integrity under heavy spring pressures. The 11 vent holes mitigate vacuum effects during firing, while the dual O-rings and rotating ball bearing maintain a stable, airtight seal and consistent alignment. Together, these features translate to smoother operation, steadier FPS, and improved durability for upgraded AEG setups that push toward high-torque performance.
