Maxx Model CNC Aluminum Hopup Chamber for M4 / M16 Series Airsoft AEG Rifles

CNC Aluminum PRO Hopup Chamber (with BB Latching System) unit is precisely machined to perform accurately and consistently on M4/M16 AEG series rifles.

The Hopup Chamber 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 and is fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BB during use.

• M4A unit is designed to accept 21.00mm to 21.25mm nozzle length (not compatible with KWA)
• M4P unit is designed to accept the HPA PolarStar Engine M4 nozzle length
• M4W unit is designed to accept the HPA Wolverine/Heretic M4 nozzle length

The Hopup Chamber 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 AEG Gearbox/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

Additionally, the Hopup Chamber Pro unit is specially designed with a new BB Latching System to prevent BB dropping after removing the magazine (M4W model lacks this feature). 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. Operating Voltage from 7VDC - 15VDC (2-4 cells LiPo, 6-13 cells NiCad). (Sold separately)
***Test results: FPS might be increased from 10FPS to 30FPS over the stock setup. Please check your FPS!

Features:

• Machined from a solid aircraft aluminum block with tight tolerances to achieve the most accuracy, consistency, and durability
• 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 21.00mm to 21.25mm nozzle length
• Fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BB during use
• Wisely equipped with an interchangeable Inlet Adaptor OD11mm to ensure the hopup unit is inserted exactly in the center of the 11mm inner bore AEG Gearbox/HPA Engine nozzle outlet without wobbling. (Inlet Adaptor OD11.5mm and OD12mm are sold separately)
• Mounted the removable CNC Brass Side Wings to slide smoothly into the outer barrel slots
• Included an advanced CNC Delrin Locking C-Clip to hold the inner barrel tight in place without wobbling and twisting
• Equipped with 2 compression springs on top and center to ensure the hopup unit is seated straight and air-tight during use
• 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
• Compatible with any 11mm inner bore AEG Gearbox/HPA Engine nozzle outlets
• The Dual UV LED Tracer Module to glow BB in the dark ready!

Includes:

• CNC Aluminum Hopup Chamber M4A Pro (with BB Latching System) unit
• 2x CNC Acrylic Side Cover
• 2x CNC Brass 2.5mm Side Wing
• CNC Steel Pivot Pin
• CNC Aluminum Hopup Lever
• CNC Aluminum Soft Round Nub
• CNC Aluminum Soft Flat Nub (4mm)
• CNC Aluminum Hard Concave Nub (4mm)
• 3x Steel Nub Spring
• CNC Steel Spring Guide
• Steel Upper Compression Spring
• Steel Center Compression Spring
• CNC Delrin Locking C-Clip
• CNC Brass Barrel Spacer
• Brass Barrel Spacer Holder Oring
• CNC Aluminum Rotary Dial Knob
• CNC Aluminum Inlet Adaptor (OD11mm)
• M4A version only! includes CNC Brass Inlet Spacer

Specifications:

Overall Length:
   M4P; 51.15mm
   M4A; 51.65mm
Overall Height: 37.75mm
Inlet Adaptor Outer Diameter: 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