Aluminium Piston Head w/ Ball Bearing [Action Army]

THE ACTION ARMY CNC Piston head with single O-Ring is an excellent solution that increases the efficiency of airflow through the cylinder. This piston head has forward doors to push out of the ring as it moves forward, so there is no cylinder being pushed out to propel the BB. EXERCISE OF EXECUTION is one of the most advanced for different types of weapons.

Features:

Piston head for gearbox Ver II and Ver IV Marui
It has O-ring to ensure the best fit and best possible seal
You can fix all the necessary parts at the same time
Rugged construction for longevity, reliability and performance
Compatibility Type: Version 2 - Version7 / M4, M16, M733, MP5, SCAR, AK, UMG, etc.
Compatibility Brand: Tokyo Marui, G&G, ICS, VFC, KWA, H&K, JG, SRC, UMAREX, Army Class Echo 1