CNC Aluminum Hopup Chamber M4P - PRO

The CNC Hop-up chamber of the M4P - PRO (with bullet catch) is made of aircraft aluminum and designed for standard M4/M16 guns with HPA PolarStar. Its design eliminates air leaks and noticeably increases performance.
Adjustment of downforce is done with a rotary ring that allows very fine adjustment of downforce. The 4 mm pressure arm (6 mm can be purchased as a separate accessory) is compatible with R-hop and Standard-Hop rubber bands.
The chamber is designed for Polarstar HPA nozzles and is compatible with most soft and hard hop-up rubber bands without loss of performance.

The M4P Pro chamber features an interchangeable OD11mm inlet adapter that ensures the chamber is inserted exactly in the center of the nozzle inlet without wobbling (OD11.5mm and OD12mm adapters can be purchased as separate accessories). The chamber also features a CNC barrel lock that holds the barrel firmly in place, preventing the barrel from rotating or wobbling. Another new feature is the brass side washers that slide into the grooves of the outer barrel and assist in centering the chamber.
In addition, this chamber has a special lever-action ball catch, so you will no longer have balls falling out when you pull the magazine (as is common with standard hop-up chambers). To release the marbles from the chamber you need to press the lever.