AOLS Propane & Co2 Adaptor With Silicone Oil Port.

Features:
Silicon container feature allow to lube your GBB magazine when refill propane.
Special design for leakproffness, ensure the propane or CO2 can't leak out of the stem.
When refill propane and press the stem, the silicon oil will mix with propane and go inside to your GBB magazine.
Full matal structure, brass for core and aluminum for the cap.
Size: 30x32x48mm
Weight n.w/g.w: 51g/64g
Presented by Airsoft Industry Co.