CNC Aluminum Hopup Chamber M4P - PRO (Maxx Model)

CNC Aluminum Hopup Chamber M4P Pro (with BB Latching System) unit is precisely machined to perform accurately and consistently with HPA PolarStar Engines 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 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.
The Hopup Chamber M4P unit is designed to accept the HPA PolarStar Engine M4 nozzle length, and fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BB during use.
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 HPA Engine 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.

1 x CNC Aluminum Hopup Chamber M4P Pro (with BB Latching System) unit

2 x CNC Acrylic Side Cover

2 x CNC Brass 2.5mm Side Wing

1 x CNC Steel Pivot Pin

1 x CNC Aluminum Hopup Lever

1 x CNC Aluminum Soft Round Nub

1 x CNC Aluminum Soft Flat Nub (4mm)

1 x CNC Aluminum Hard Concave Nub (4mm)

3 x Steel Nub Spring

1 x CNC Steel Spring Guide

1 x Steel Upper Compression Spring

1 x Steel Center Compression Spring

1 x CNC Delrin Locking C-Clip

1 x CNC Brass Barrel Spacer

1 x Brass Barrel Spacer Holder Oring

1 x CNC Aluminum Rotary Dial Knob

1 x CNC Aluminum Inlet Adaptor (OD11mm)

Overall Length: 51.15mm

Overall Height: 37.75mm

Inlet Adaptor Outer Diameter (to fit into HPA Nozzle Outlet): 11mm

Hub Outer Diameter (to fit into Outer Barrel): 12mm

Hub Inner Diameter (to fit Nozzle): 8mm

Feeder Outer Diameter (to fit magazine): 8.85mm

Feeder Length (to fit magazine): 6mm

Material: Aluminum 6061