

- CNC Aluminium/Steel/Brass
- Designed to work with the stock adjuster
- For Tokyo Marui M4 MWS/ZET System GBBRs
If you're running a TM M4 MWS/ZET system GBBR and need to improve accuracy, range and efficiency, the MAXX MODEL CNC Aluminium HOP-Up Chamber M4T for TM M4 MWS/ZET System GBBR is what you need. Made from CNC-machined aluminium and designed to work with the original TM adjuster unit, this set includes the choice of 3 HOP-up nubs and is compatible with any VSR/GBB spec HOP-up rubber.
Being equipped with an innovative taper locking sleeve means there is absolutely no chance your inner barrel will rotate under the recoil of firing, and the included CNC aluminium locking C-clip keeps the barrel perfectly positioned laterally to ensure you get the best accuracy from your build. Assembly and installation will require a certain amount of expertise, but once inside your TM M4 MWS/ZET system or Double Eagle MWS clone, you'll never look back!
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
Features
- CNC Aluminium/Steel/Brass construction
- Designed to work with the stock adjuster - No need to replace it
- 3 HOP-up nubs included - Less to buy to get busy!
- Taper locking sleeve - Ensures your inner barrel cannot rotate
- CNC Aluminium locking C-clip - Further ensures the inner barrel stays in the perfect spot
- Fits most GBB/VSR-spec HOP-up buckings - Broad compatibility
- For Tokyo Marui M4 MWS/ZET System GBBRs - Also fits EMG/Double Eagle MWS clones
Package Includes
- MAXX MODEL CNC Aluminium HOP-Up Chamber M4T for TM M4 MWS/ZET System GBBR
- CNC Aluminium Hop-up Chamber
- CNC Aluminium Hop-up Lever
- CNC Brass Pivot Pin
- Steel Lever Torsion Spring
- CNC Aluminium Locking C-Clip
- CNC Aluminium Taper Locking Sleeve
- CNC Aluminium Locking Cap
- CNC Stainless Steel Bucking Spacer
- O-Ring Chamber Damper
- CNC Aluminium Soft Round Nub
- CNC Aluminium Soft Flat Nub
- CNC Aluminium Hard Concave Nub
Specification
General
Parts & Accessories Type | Hop-Up Units and Buckings |
|---|---|
Internal Part Type | Hop-Up & Parts |
Warnings | Parts Fitting Unique Part Custom Parts |
Construction
Item Colour | Black, Red, |
|---|---|
Construction | CNC Aluminium. Steel springs. CNC Steel bucking spacer. CNC Brass pivot pin. |
Internal Part Construction | Steel, Aluminium, Brass, |
Part Specific
Part for Power Source Type | Gas |
|---|---|
Platform | TM ZET System M4 GBBR |
Platform Type | Assault Rifle |
Package Includes | Hop Unit |
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.


