Retro Arms CNC HPA V2 Gearbox PK126 The KWA 2016 model ATP-SE

The KWA 2016 model ATP-SE

Made of polycarbonate

"Semi/Auto ramping" fires in semi and switches to full auto if the trigger is rapidly tapped

along with internal threading for use with compatible threaded adapters

Retro Arms CNC HPA V2 Gearbox PK126 The KWA 2016 model ATP-SEThis 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.