Description

CNC Aluminum Hopup Chamber M4i – PRO (with BB Latching System) unit is precisely machined to perform accurately and consistently with guns from ICS manufacturer on standard M4/M16 platform.
The Hopup Chamber M4P unit is built with an aluminum Rotary Dial Knob for fine hopup adjustments, the precision Hopup Lever and 4 mm Bucking Nubs (6 mm Bucking Nubs are optional) to perform best with R-Hop and Standard-Hop to keep the BB shooting accurately and consistently on every single shot.
The Hopup Chamber M4P unit is wisely equipped with an interchangeable Inlet Adaptor OD11mm to ensure the hopup unit is inserted exactly in the center of the 11mm inner bore ICS AEG Gearbox nozzle outlet without wobbling (inlet adaptor OD11.5mm and OD12mm are optional).
Also mounted the removable CNC Brass Side Wings to slide smoothly into the outer barrel slots, and included an advanced CNC Delrin Locking C-Clip to hold the inner barrel tight in place without wobbling and twisting. More than that, the Hopup Chamber M4P Pro unit is specially designed with a new BB Latching System to prevent BB dropping after removing the magazine. The Latching Arm can also be manually pressed to release the remaining BB from inside the hopup chamber.
— The Dual UV LED Tracer Module is an add-on option to glow BB in the dark. (Sold separately)
Features:

Machined from a solid aircraft aluminum block with tight tolerances to achieve the most accuracy, consistency, and durability
Performed accurately and consistently with HPA PolarStar Engines on standard M4/M16 platform 
Precision Rotary Dial Knob for fine hopup adjustments
Re-engineered the precision Hopup Lever and 4mm Bucking Nubs (6mm Bucking Nubs are optional) to perform best with R-Hop and Standard-Hop to keep the BB shooting accurately and consistently on every single shot
Removable Steel Pivot Pin for ease of setup and maintenance
Accepted the HPA PolarStar Engine M4 nozzle length
Fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BB ..