Retro Arms CNC HPA V2 Gearbox PolarStar Engines the MDR-X is made of

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

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

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

Retro Arms CNC HPA V2 Gearbox PolarStar Engines the MDR-X is made 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.