G&G thermally stable hop up bucking

The Hop-Up rubber was made of silicon thanks to which is keeps it properties even in low temperatures due to the fact that it does not get stiff just like in the case of regular rubber. It performs perfectly both in typical conditions as in negative temperatures – it keeps it properties even in the temperatures reaching 40 degrees below zero.

The Hop-Up rubber is adjusted to operate in a system equipped with a main spring up to the characteristic of M140 (including).