The ProTech series cylinder grease (silicon) a necessary component of any serious upgrade.
All moving parts must be kept well lubricated to avoid heat built up and excessive wear as well as securing a tight seal between cylinder and piston head O-ring. Contains approx 10 ml

Airsoft SA-C25 CORE™
LI-ION 7.4V 5200mAh 15C battery
G36 Nozzle 24.1mm
25 mm picatinny riser
M4 Nozzle H+PTFE 21.1mm
M4 Nozzle 21.4mm
Gear grease 