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The world’s best and only aftermarket gearbox shell for airsoft P90’s is available here first at Shadow Regime Airsoft! Retro Arms’ gearbox is manufactured from a single block of aviation grade duralumin EN AW 7075 T651, which has greater tensile strength (590 MPa) than standard structural steel (390 MPa). Thanks to this material the gearbox shell has several times longer lifespan than standard zinc-alloy gearbox shells. Gearbox shells are manufactured on precise CNC machines directly in the Czech Republic (EUROPE). The gearbox is equipped with Quick Spring change (QSC) system, thanks to which you can remove the spring without the need of disassembling the gearbox.
The gearbox shell includes screws and a spring guide. We recommend at least getting the bushings and bushing installation tool to go with it. If you’re looking to build a high performance gearbox, we recommend getting the entire Retro Arms Bundle.
Retro Arms Bundle gets 10% off and includes:
Retro Arms P90 CNC Aluminum Gearbox Shell with Quick Spring Change (includes screws and spring guide)
Retro Arms Antirot 3mm bushings
Retro Arms bushing installation tool
Retro Arms P90 CNC Aluminum Cutoff Lever (does not include screw or spring)
Retro Arms P90 CNC POM tappet plate (does not include spring)
Add on our P90 M-Trigger Evo for the best trigger performance. Includes Perun ETU++ mosfet.
