GHK Original Parts - G5 Replacement Part No. G5-05

This is one of best hop up rubber for GBBRs which use AEG-type inner barrel and rubber. This can handle/hop heavy BBs very well and give really nice range and accuracy.

I highly recommend to use with heavy BBs (.36, .40, .43).

I known only one issue with this rubber which is the lubrication. If the used gas has lubrication it will decrease the effecity of this rubber, use it with clear gas (like CO2 or propane).