TORNADO Antifreeze Cylinder Bulb for AAP-01 GBB Airsoft

Plastic Structure For Airsoft Use Only V1 for General Use In High Humidity Situation V2 for Low Humidity Situation with Slightly Increase Accuracy V3 for Extended Inner Barrel V4 for Improve Muzzle Velocity More Stable Only V1 & V2 Can Use with CO2 Magazine