ProWin 5.5 X 1MM O -Ring

The ProWin O-ring for the TM G series model 17 & 18, Hi-Capa series, and M4 MWS magazines is designed to take the prolonged pressures of green gas.

Compatibility:

• Tokyo Marui G Series Model 17
• Tokyo Marui G Series Model 18
• Tokyo Marui Hi-Capa Series
• Tokyo Marui M4 MWS GBBR

Includes:

x3 ProWin 5.5 X 1MM O -Ring for Prowin Model 17 & 18 / Hi-Capa / MWS M4A1 GBB Gas Magazine