CNC machined Piston Head, made from aluminium 6061. This version comes with Viton oring and a slightly longer screw to allow for any AOE shim corrections.
- 6 air vents
- Viton oring
- 16mm carbon steel screw
- Thrust bearing
** As with all airsoft Piston Heads it's worth adding a small dab of retaining compound on the thread.