Whilst many us know that Specna Arms are mainly a brand of complete airsoft guns, they also have internal parts that can be used as spares for Specna Arms AEGs and other compatible AEGs... "Get ready for the maximum performance with the new Specna Arms parts!

Specna Arms®, the popular airsoft brand, introduces for sale high-quality internal parts. In their offer you can find gears, pistons, cylinders, nozzles, gearbox shells and other parts. Test them and improve the performance of your Airsoft replica."

Gearbox:

Gearbox Shell:

Gearbox v2 Mod2: