Piston head designed to work with concave cylinder heads (mushroom / silent).  Comes with bearing. Please note colour of aluminium and o-ring may vary.

Fully compatible with XT, ZCI, and Rocket cylinders and cylinder heads. Identical design to SHS.

** Please note.  Although called "silent" these parts do little to dampen the sound of an AEG.  It's just a term that has stuck over the years to describe this particular design.

- 6 air vents
- Rubberised pas cushion
- NBR oring
- 12mm carbon steel screw
- Thrust bearing

** As with all Airsoft Piston Heads it's worth adding a small dab of retaining compound on the thread.  Do not over-tighten screw.