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E&C upgraded aluminium piston head. Great quality, works perfectly with ZCI and Rocket cyl..
Polymer V2 piston head. Used in E&C and Specna Arms standard gearboxes, Very sturdy a..
Basic Chinese o-ring that seem to be used more and more these days. Used for standard and bore..
Viton o-rings have excellent resistance to high temperatures and a broad range of chemicals. Th..
Plastic (POM) 8 vent piston head that uses the dual o-ring design. Thread insert is made from ..
100% identical to the SHS POM piston head. Comes with bearing and a flat top. POM (Polyoxymethylene)..
Silent piston head designed to work with silent cylinder heads. This version comes with a..
CNC machined piston head with 6 large vents. Comes with bearing. Fully compatible with S..