The new AIMTOP hop-up rubber will allow more precise hoop-up adjustment.
It was designed for replicas with a power of 350-490fps.
It is very important to properly choose the type of hop-up rubber to the power of the replica.
Too soft or too hard rubber will not be able to take full advantage of the replicas capabilities.
Dedicated to springs with power M120-150 / 350-490fps
The set contains two hop-up rubbers and two spacers.