Maxx Model CNC Hopup Chamber M4P PRO for Polarstar M4 HPA

The Maxx Model CNC Hopup Chamber M4P PRO for Polarstar M4 HPA (with BB Latching System) is precision machined to perform accurately and consistently.

This chamber by Maxx Model works perfectly on M4/M16 type airsoft replicas equipped with a Polarstar HPA Enigine. 
The M4A Hopup Chamber is built with an aluminum dial for fine hopup adjustments. The precision Hopup Lever and 4mm Bucking Nubs (6mm Bucking Nubs are optional) are made to perform best with R-Hop and Standard-Hop to keep every shot consistent and accurate.
The M4P Hopup Chamber is designed to accept the HPA PolarStar Engine M4 Nozzle Length, and is fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BBs in use. (Think about this when reloading your magazine).
The Hopup Chamber is wisely equipped with an interchangeable Inlet Adapter OD11mm to ensure that the hopup unit is precisely centered on the 11mm inner bore AEG Gearbox/HPA Engine nozzle outlet without wobbling. (Inlet adapter OD11.5mm and OD12mm are optional).

Also, the removable CNC Brass Side Wings are mounted to slide smoothly into the outer barrel slots, and includes an advanced CNC Delrin Locking C-Clip to hold the inner barrel tightly in place without wobbling and twisting.

***Test results: FPS can be increased from 10FPS to 30FPS compared to the standard setup. Check your FPS!