Retro Arms CNC HPA V2 Gearbox PolarStar Engines 360-degree rotation and option of

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

The basepad’s heel is angled to be able to act as a monopod during supported shooting and

The fire selector features a safe position

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

Pressure Range: 60-180psi

Retro Arms CNC HPA V2 Gearbox PolarStar Engines 360-degree rotation and option ofThis 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.