SKU: 39855183500

MAXX CNC Aluminum Hopup Chamber M4i - PRO

Sale price$94.49 Regular price$104.99
Save 10%

Pay in installments of $26.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

MAXX CNC Aluminum Hopup Chamber M4i - PROProduct Description CNC Aluminum Hopup Chamber M4i Pro (with BB Latching System) unit is precisely machined to perform accurately and consistently on ICS CXP CS4 EBB (include old models) M4 M16 AEG series. The Hopup Chamber M4i 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

Product Description

 

CNC Aluminum Hopup Chamber M4i Pro (with BB Latching System) unit is precisely machined to perform accurately and consistently on ICS CXP/CS4/EBB (include old models) M4/M16 AEG series.
The Hopup Chamber M4i 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.
The Hopup Chamber M4i unit is designed to accept 21.00mm to 21.25mm nozzle length, and fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BB during use.
The Hopup Chamber M4i unit is wisely equipped with an interchangeable Inlet Adaptor OD12mm to ensure the hopup unit is inserted exactly in the center of the 12mm inner bore ICS AEG Gearbox nozzle outlet without wobbling. (Inlet Adaptor OD11mm and OD11.5mm 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.
More than that, the Hopup Chamber M4i 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.

***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!

 

  Includes
1 x CNC Aluminum Hopup Chamber M4i Pro (with BB Latching System) unit
2 x CNC Acrylic Side Cover
2 x CNC Brass 2.9mm 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 (OD12mm)
1 x CNC Brass Inlet Spacer

 

  Specification
Overall Length: 51.65mm
Overall Height: 38.75mm
Inlet Adaptor Outer Diameter (to fit into Gear Box): 12mm
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

 

  Features
Machined from a solid aircraft aluminum block with tight tolerances to achieve the most accuracy, consistency, and durability
Performed accurately and consistently on ICS CXP/CS4/EBB (include old models) M4/M16 AEG series
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 OD12mm to ensure the hopup unit is inserted exactly in the center of the 12mm inner bore ICS AEG Gearbox nozzle outlet without wobbling. (Inlet Adaptor OD11mm and OD11.5mm 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 12mm inner bore ICS AEG Gearbox nozzle outlets
The Dual UV LED Tracer Module to glow BB in the dark ready!

 

  Weight
N/A grams

 

  Usage
Compatible with most ICS CXP/CS4/EBB (include old models) M4/M16 AEG series

 

  Requires
Wearing eye protection is recommended
Use proper tools for disassembly and reassembly the gear box with great care due to spring tension
Bearing lubricant oil/grease is recommended for smooth operation

 

  Instruction
Instruction Manuals are included

 

ICS® is a registered trademark of ICS Enterprise Co., Ltd.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 39855183500

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 27 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Carmen Lewallen
Draper, US
★★★★★ 5
Great product
Size: 13.52 Fl Oz
Works great without drying your skin out. Used to use witch hazel and like this way better. Non greasy, and good for sensitive skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
L
Verified Purchase
Lizzie
Cuba, US
★★★★★ 5
great for acne-prone and sensitive skin
Size: 13.52 Fl Oz
Simply the best makeup remover I have found for my sensitive skin and acne-prone. I use it to take my makeup off before Cerave cleanser for a super gentle double-cleanse, and it has significantly reduced my cystic acne breakouts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
B
Verified Purchase
Brooke
Louisville, US
★★★★★ 5
My fav
Size: 13.52 Fl Oz
My fav micellar water. Feels clean and my skin has been getting more clear after using
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
B
Verified Purchase
Barefoot Scientist
Omaha, US
★★★★★ 5
Holy Grail Micellar Water
Size: 13.52 Fl Oz
This is my holy grail micellar water! My skin can be sensitive and reactive at times, and this product has never let me down. It has never irritated my eyes or skin. I use it to double cleanse, although sometimes I use only this micellar water followed by a quick splash of water. It does not leave a film and leaves my skin feeling nourished and happy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 24, 2025
S
Verified Purchase
SweetWordsx3
Lexington, US
★★★★★ 4
but takes quiet a good amount of cotton balls
Size: 6.8 Fl Oz (Pack of 1)
It removes makeup alright, but takes quiet a good amount of cotton balls. Haven't try it on waterproof makeup yet, but it does make make skin feels clean and isn't harsh. Edit: Tried it for a couple of days, and here's the verdict: It can remove makeup, but you'll need a good amount of it on a cotton pad, and likely you'll use more than one. It feels nice while it is on the face, though it clean best with light makeup, and it takes me a couple of cotton balls to clean eyeliner and mascara. I needed to use moisturizer after it, because it make my skin feels dry. It doesn't take long, and definitely save more time than washing with soap and water, but it's a little bit of a hassle, too. Oh well, at least it's very convenient.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2016

recommand products