Retro Arms CNC HPA V2 Gearbox PolarStar Engines Remove the protective film from

Remove the protective film from the Lexan Lens

360-degree rotation and option of 7 carrying ways make a perfect fit in every application

The filling valve very rarely leaks when used to fill Airsoft guns

Metal notch spacer: slide the inside of the metal parts is receiving the burden at the time of the slide open

The receiver set is high-quality

Retro Arms CNC HPA V2 Gearbox PolarStar Engines Remove the protective film fromThis shell is machined just for HPA parts. The price is lower due to the reduced machining time (no need to accommodate AEG parts) and because no spring guide is included. These Gearbox Shells are fully CNC machined from a block of 7075 T6 Aluminum. This material is very strong and can endure a ton of stress. Anodized black for corrosion resistance. Comes with screws.