Hop Up Barrel Slot Bushing set Fittings lightweight poppet valve design yet

lightweight poppet valve design yet still operates on the same principle as the Fusion Engine™ poppet

they can also be threaded into a conventional regulator to make an extremely compact air rig

This FCU is also universally compatible with all PolarStar HPA systems including both dual and single-solenoid systems

It also allows you to run a higher pressure to maintain reliable feeding with the standard heavy spring and heavy BB's without going over the velocity limit

Below we are listing the make and model of the replicas which the nozzle length is most commonly used with but it may be compatible with more models

Hop Up Barrel Slot Bushing set Fittings lightweight poppet valve design yetHop Up Thing Barrel Slot Bushings Stop the wiggle. Lock the hop up in place. Most stock hop up units have loose fitment in the outer barrel, leaving room for the hop up to rotate or shift vertically. Rotation sends BBs left or right. Vertical movement throws off loading consistency and nozzle alignment. Either way, your accuracy pays the price. Barrel slot bushings eliminate that play entirely. They fill the gap between the barrel slots and the Hop Up