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Maxx Model CNC Aluminum Hopup Chamber for M4 Airsoft AEG Rifles (Model: M4P - PRO)

ID: 102036 (HU-MX-HOP010MP)
MX-HOP010MP
Maxx Model CNC Aluminum Hopup Chamber for M4 Airsoft AEG Rifles (Model: M4P - PRO)
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Hopup unit may require assembling
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Maxx Model Products

$79.98

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Features

  • Machined from a solid aircraft aluminum block with tight tolerances to provide better accuracy, consistency, and durability
  • Precision rotary dial design for fine hopup adjustments
  • Re-engineered the hopup levers and nubs to work best with R-hop, Flat-Hop and Standard-Hop to keep the BBs shooting straight and accurate on every single shot
  • Accepted the HPA PolarStar Engine M4 nozzle length
  • Fully compatible with most aftermarket soft and hard rubber bucking without losing FPS or dropping BBs
  • Equipped with a new CNC Delrin Locking C-Clip design to hold barrel tight without wobbling and twisting, 3 compression springs on top, at bottom and in center of housing to ensure the hopup unit is exactly centered, straight and air tight
  • Compatible with any 11mm inner bore HPA Engine nozzle outlets
  • Specially designed with BB Latching System to prevent dropping BBs after removing the magazine, manually opened to release BBs from inside hopup chamber by hand
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 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. 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.

Manufacturer: Maxx Model

Specifications:

Hopup Kit Includes:
  • 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 Gear Box): 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
    Application: For most HPA PolarStar Engines on standard M4/M16 platforms
    Material: Aluminum 6061

    Test Results: FPS might be increased from 10FPS to 30FPS over the stock setup. Please check your FPS!
    Disclaimer: Professional installation highly recommended. Please use discretion when installing custom parts as fit and compatibility may vary. Modification may be required. Professional installation recommended.

    About Maxx Model Products

    Maxx Model Products design, manufacture, and make high quality parts for Airsoft products.

    7 Customer Reviews

    (Write a review)

    by Oliver S. on 07/31/2024
    "The Maxx M4A -PRO is an excellent Hopup unit. I installed it in an Umarex HK M110 A1. I had to use a Dremel and do some heavy modification to the M110's hopup adapter (the black polymer barrel extension that interfaces the hopup unit with the barrel) in order to get it to fit, as the stock hopup unit for the M110 is very slim and aftermarket hopup units don't fit. The Maxx M4A is a high quality, aluminum chamber, with clear side windows so you can see into the chamber. It has a nice BB retention system that prevents excess BB's from falling out when you remove the magazine. Very nice feature. The M4A comes with a flat nub installed and I used that with an R-Hopped barrel patch and smooth bucking. This setup is lifting .40g BB's and providing great range and accuracy in my rifle. Highly recommended.
    by June M. on 05/18/2024
    "Went into my A&K SR-25 build with no issues at all. I’m a big fan of the bb retention, AMS has a mag limit and every bb counts.
    by Joshua S. on 04/21/2024
    "Have an M4A in an AEG build and an M4P in an HPA Jack build and they are both great. Easy to install and make small adjustments.

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