Retro Arms CNC HPA V2 Gearbox PolarStar Engines The receiver set is high-quality

The receiver set is high-quality

the MDR-X is made of high-quality polymer and aluminum

The fire selector features a safe position

The new i5 goggle system is an aggressive

Remove the protective film from the Lexan Lens

Retro Arms CNC HPA V2 Gearbox PolarStar Engines The receiver set is high-qualityThis 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.