This CNC Aluminum Hop-up Chamber ME Pro (with BB Latching System) unit, by Maxx Model, is precisely made to improve accuracy and ensure consistent air seal for Tokyo Marui (include KRYTAC, except KWA) M4/M16 Standard AEG series.

The Hopup Chamber ME unit has a precision rotary dial design for fine hopup adjustments. The hopup levers and concave nubs have also been re-engineered to work best with R-hop and Standard-Hop systems to keep the BBs shooting straight and accurate on every single shot.

The Hopup Chamber ME unit is designed to accept the nozzle length from 21.00mm to 21.25mm, and fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BBs.

The Hopup Chamber ME Housing is equipped with a new CNC Delrin Locking C-Clip design to hold barrel tight without wobbling and twisting, and 3 compression springs on top, at the bottom and in the centre of the housing to ensure the hopup unit is exactly centered, straight and air tight, at all times, when adapted to any V2 gear boxes with 11mm or 11.5mm inner bore.

Another point to note is that, the Hopup Chamber ME Pro unit is specially designed with BB Latching System to prevent dropping BBs after removing the magazine. The Latching System can be also manually opened to release BBs from inside the hopup chamber by hand.

***The Dual UV LED Boards and Module set and Single UV LED Board w/ Clear Cover and Module set are optional add-ons to glow BBs in the dark. Operating Voltage from 7VDC - 15VDC (2-4 cells LiPo, 6-13 cells NiCad). (Sold separately)
***The Empty Magazine Detection Sensor and Electronic Switch Controller are optional add-ons to stop Motor/HPA firing when the magazine is empty. (Sold separately)
***Test results: FPS might be increased from 10FPS to 30FPS over stock setup. Please check your FPS!

Includes:
1 x CNC Aluminum Hopup Chamber ME Pro (with BB Latching System) unit
2 x Strong Clear Vinyl Cover
1 x CNC Aluminum Standard-Hop Arm
1 x CNC Aluminum R-Hop Arm
1 x Silicone Rubber Standard-Hop Nub Damper
1 x Silicone Rubber R-Hop Nub Damper
1 x CNC Aluminum 4.5mm length Precision R-Hop Concave Nub
1 x CNC Aluminum 6mm length Precision R-Hop Concave Nub
1 x CNC Brass Threaded Slot Pin
1 x CNC Delrin Locking C-Clip
1 x CNC Barrel Brass Spacer
1 x Brass Spacer Holder Oring
3 x Steel Compression Spring

Specification:
Overall Length: 51mm
Overall Height: 37.75mm
Hub Outer Diameter (to fit into Gear Box): min 11mm - max 11.5mm
Hub Outer Diameter (to fit into Outer Barrel): min 12mm
Hub Inner Diameter (to fit Nozzle): max 8.3mm
Feeder Outer Diameter (to fit magazine): min 9.25mm
Feeder Length (to fit magazine): max 6.25mm
Material: Aluminum 6061

Key Features:

• Machined from a solid aircraft aluminium block with tight tolerances to provide better accuracy, consistency, and durability
  
• Improved accuracy and ensure consistent air seal for Tokyo Marui (include KRYTAC, except KWA) M4/M16 Standard AEG series
  
• Precision rotary dial design for fine hopup adjustments
  
• Re-engineered the hopup levers and concave nubs to work best with R-hop and Standard-Hop to keep the BBs shooting straight and accurate on every single shot
  
• Removable Brass Threaded Slot Pin for setup and maintenance
  
• Accepted the nozzle length from 21.00mm to 21.25mm
  
• 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
  
• Equipped with 3 compression springs on top, at the bottom and in centre of housing to ensure the hopup unit is exactly centred, straight and air tight
  
• Compatible with any V2 gearboxes with 11mm or 11.5mm bore 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
• The Empty Magazine Detection Sensor to stop Motor/HPA firing ready!
  

Usage Compatible with most Tokyo Marui (include KRYTAC, except KWA) M4/M16 standard AEG version 2 gearbox

Requirements:

• Wearing eye protection is recommended.
  
• Use proper tools for disassembling and reassembling the gear box with great care due to spring tension.
  
• Bearing lubricant oil/grease is recommended for smooth operation.
  

Don't forget - if you aren't confident in carrying out your own weapon servicing, repairs or upgrades, we have experienced airsoft technicians in-store and can do the work for you. You can even book a service with us online by clicking this link!

Book a Gun Service.

To buy an airsoft weapon in the UK you must have a valid airsoft defence.

This is not a licence, it is basically just proof that you intend to buy an airsoft weapon for use in airsoft.

An airsoft defence could be a UKARA or membership with the British Airsoft Club, and various other forms of defence.

You can only obtain an airsoft defence once you are over the age of 18.

To get an airsoft defence the law is that you should play at least 3 games of airsoft, and that you must have been playing for at least two months.

You can still buy an airsoft gun without a defence, provided you are 18 or older. If you choose to do this we would, by law, two tone (paint in a bright colour) parts of your chosen weapon. This is because an airsoft gun is considered a RIF aka Realistic Imitation Firearm, because they are so close to the real steel, whereas when you paint parts of it in a bright colour it becomes an IF aka Imitation Firearm. The reason being that the bright colours make it look less realistic to the public, and therefor less likely to be mistaken as real, were it to be used for any other purpose than airsoft.

When you order a gun from us you will need to add your defence details in the comments section of the cart. If you do not have a defence you will need to write the colour that you wish to be used for two toning your airsoft weapon.

Here is what's stated in the VCRA (Violent Crime Reduction) Act:

For airsoft skirmishing, the Association of British Airsoft is putting in place arrangements to allow retailers to check that individual purchasers are members of a genuine skirmishing club or site. The key elements of these arrangements are:
1. new players must play at least 3 (three) times in a period of not less than two months before being offered membership
2. membership cards with a photograph and recognised format will be issued for production to retailers
3. A central database will be set up for retailers to cross-check a purchaser’s details
4. member’s entry on the database will be deleted if unused for 12 months.
The defence for airsoft skirmishing can apply to individual players because their purchase of realistic imitation firearms for this purpose is considered part of the “holding” of a skirmishing event.