RETRO Arms CNC Gearbox V2 for HPA Units w/ QSC System Reviews

4 Rating 2 Reviews

CNC gearbox V2 designed for airsoft rifles to have HPA units installed. This gearbox is manufactured from one solid block of aircraft aluminum (Dural) EN AW 7075 T651, which has higher strength (590MPa), than common construction steel 390MPa). Because of used material, Retro Arms gearboxes have a very good durability and resilience than common zinc-aluminum gearboxes. We are manufacturing these gearboxes on our precise CNC milling machines in our factory.
Package includes: CNC Gearbox V2 for HPA – QSC, set of screws and QSC spring guide.

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“Similar to another review (which I didn’t see) the IGL or AGL do not fit in its current state. If you have the time and tools to bore it then it’ll be fine. For Kythera users, it will take some tweaking since the engine itself will tend to turn too much to lean off the trigger.”

1 Helpful Report

Posted 2 years ago

The AGL should fit as that just goes in the grip, but the IGL and UGL usually need some extra space milled out, even in some AEG gearboxes.

Posted 2 years ago

“This gearbox is great if you intend to use the included macro line from polarstar but will not fit the amped IGL which is a bummer.”

1 Helpful Report

Posted 2 years ago

Most gearboxes will require some boring out to fit our thicc IGL.

Posted 2 years ago