

- 6061 CNC Aluminium
 - Complete Hop-up unit
 - For V2 gearboxes
 
If you want only the best for your Airsoft AEG, you need this. The MAXX MODEL CNC Aluminium PRO HOP-Up Chamber is a premium upgrade part, designed to make your AEG shoot with pinpoint accuracy and consistency. Thanks to its inclusion of multiple spacers, it is compatible with various Tokyo Marui and VFC-based V2 gearboxes.
The MAXX MODEL Pro unit has a new BB latching system that prevents BBs from dropping out after removing the magazine, no more mess on the floor! The precision rotary adjustment knob allows for extremely precise adjustments, making this HOP a great choice for DMRs as well as standard rifles.
Make your rifle perform to the best of its abilities with the MAXX MODEL CNC Aluminium PRO HOP-Up Chamber for M4/AR-15 AEGs. This premium part will provide unparalleled performance.
Fast Delivery
Delivery & Postage
Here at Patrol Base, we send all our packages from our Warehouse based in the UK with the exception of European Warehouse Items. All of our parcels are sent with specially picked couriers to ensure your parcels get to you on time and in one piece.
For more information please check out our Delivery Information Page.
Estimates
Below are some rough postage prices for orders. Please note these are subject to change and are only a rough guide. For a more accurate postage estimate please use the Postage Calculator at the basket.
UK 3-5 day Standard
£6.95
From
Dispatched with 24hr UK mainland
£8.95
From
Highlands / Islands
£24.99*
From
* Please note that Scottish Highlands, and Islands postage prices can vary wildly. Please refer to the Postage Calculator at the basket for the lowest possible price.
Returns
We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee: if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.
You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.
For more information on returning products, and how to do it please visit our Returns Policy Page.
Description
With superior materials and a great design, the MAXX MODEL CNC Aluminium PRO HOP-Up Chamber for M4/AR-15 AEGs is sure to enhance your rifle's performance, accuracy, and consistency. It is constructed from CNC aluminium, one of the highest quality materials used in Airsoft.
It has an aluminium rotary adjustment wheel, which can be finely tuned and adjusted for various weights of BB, holding its setting far more effectively in the long run than the older gear adjuster design. It allows users to enhance the range and accuracy performance of their M4/AR-15 AEGs and other AEGs that utilise the Tokyo Marui or the ICS M4 HOP-up chamber design (please select the correct option for your platform).
The set includes all the parts you will need to complete the unit, except the HOP-up rubber and outer barrel. A nice perk of this HOP unit is its inclusion of the HOP-up lever, which can be used with the included 4mm Nub to perform best with R-HOP and standard-HOP, which keeps your BBs shooting accurately and consistently every shot.
Also included is a shim set and an O-ring set. These allow you to finely adjust the HOP-up chambers placement within your Tokyo Marui or VFC-based gearbox, so you can ensure it feeds perfectly with a superior Air seal. Simply attach the shims to adjust the placement. Make sure you know what you're doing first!
Other HOP-up enhancements include CNC brass side wings, which help slide smoothly into outer barrel slots. The advanced CNC Delrin locking C-clip holds the inner barrel tightly in place to prevent wobbling and twisting. It also has a specially designed BB latching system that prevents excess BBs from dropping on the floor when reloading.
If you're serious about upgrading your AEG, the MAXX MODEL CNC Aluminium PRO HOP-Up Chamber for M4/AR-15 AEGs is an excellent choice. This incredible upgrade part is made from high-quality materials and will provide your Airsoft rifle with insane accuracy and consistency. Get yours now and dominate the battlefield!
Features
- CNC Aluminium construction
 - Rotary HOP-up unit - The most recent M4/AR-15 design
 - CNC Machined - Tight tolerances, flawless air seal
 - Aluminium dial knob - Exact and fine HOP-up adjustment
 - Compatible with R-HOP and standard-HOP
 - CNC brass side wings - Slide smoothly into outer barrel slots
 - BB latching system - Prevents
 - For Tokyo Marui and VFC-based V2 gearboxes
 - Spacers included - Makes for an easy fitment
 - Need help installing? Get in touch with an expert!
 
Package Includes
- 1 x CNC Aluminium Hop-up Chamber M4E
 - 2 x CNC Acrylic Side Cover
 - 2 x CNC Brass 2.5mm Side Wing
 - 1 x CNC Steel Pivot Pin
 - 1 x CNC Aluminium Hop-up Lever
 - 1 x CNC Aluminium Soft Round Nub
 - 1 x CNC Aluminium Soft Flat Nub
 - 1 x CNC Aluminium Hard Concave Nub
 - 3 x Steel Nub Spring
 - 1 x CNC Steel Spring Guide
 - 1 x Steel Upper Compression Spring
 - 1 x Steel Centre Compression Spring
 - 1 x CNC Delrin Locking C-Clip
 - 1 x CNC Brass Barrel Spacer
 - 1 x Brass Barrel Spacer Holder O-ring
 - 1 x CNC Aluminium Rotary Dial Knob
 - 1 x CNC Aluminium Inlet Adaptor
 - 1 x Shim set
 - 1 x O-ring set
 
Specification
General
  Parts & Accessories Type    |    Hop-Up Units and Buckings  | 
|---|---|
  Internal Part Type    |    Hop-Up & Parts  | 
    Warnings    |     Parts Fitting  Unique Part Custom Parts Upgrade Parts  | 
Construction
    Item Colour    |     Orange  | 
|---|---|
    Construction    |    CNC Aluminium Hop-up unit with rubber nub and bucking.  | 
  Internal Part Construction    |     Aluminium, Rubber,   | 
Part Specific
  Part for Power Source Type    |    Electric  | 
|---|---|
    Platform Type    |    Assault Rifle  | 
  Package Includes    |    Complete HOP-up unit  | 
Electric Part Specific
    Gearbox Version    |    V2 Gearbox  | 
|---|
Size guide
Parts Fitting
Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff. 
Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.
We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!
Unique Parts
Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.
Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.
If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.
For more information with fitting parts, or should you require help, feel free to get in touch with our Workshop Department via our Contact Us Page.
Terms and Conditions relating to parts fitting can be read on our Terms and Conditions Page.

