SKU: 33039461377

MAXX CNC Aluminum Hop Up Chamber MI Pro

Sale price$94.49 Regular price$104.99
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Description

MAXX CNC Aluminum Hop Up Chamber MI 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: 33039461377

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Amazon Customer
Massapequa, US
★★★★★ 5
Impressed!
Color: 02 - Untinted (1.7 oz)
Just got back from a week in Florida at Disney World and this sunscreen was fantastic. I have spent hours researching different products, reading reviews and trying different things and decided to try this on my mature, acne prone skin. I applied it in the morning before leaving the hotel and once more in the middle of the day and it protected my skin from the extreme heat and sun and did not cause any breakouts. It did not run and does not cause a white cast. I would highly recommend this product!
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Reviewed in the United States on May 25, 2026
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Veronica JM
Port Orchard, US
★★★★★ 5
A Daily Essential – Lightweight & Fast-Absorbing
Color: 02 - Untinted (1.7 oz)
I've made this my go-to sunscreen and use it every single day. What sets it apart is the texture – it's smooth and applies beautifully without any sticky residue, which is a game-changer for daily wear under makeup or on its own. The absorption is impressively fast. I can apply it in the morning and not feel like I'm waiting around for it to dry down. It sinks in quickly and leaves my skin feeling clean and protected, not weighed down. For sensitive skin, this is exactly what I needed. This is a must-have in my routine. Highly recommend if you're looking for a lightweight, non-sticky sunscreen that actually works.
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Reviewed in the United States on April 9, 2026
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Bubba Fipps
Whiting, US
★★★★★ 5
Good price
Size: 50 Fl Oz (Pack of 1), Scent: Gentle & Mild
Most Amazon basics items are of decent quality and this is no exception. Nothing fancy just a decent hand soap with typical viscosity that will work in just about any dispenser including automatic dispensers. Most importantly it does a good job cleaning the hands without leaving your hands all sticky and gooey after washing. Yeah. That really is a thing. I've used hand soaps that after rinsing and drying your left with "gheco hands" like you can pick up a penny with your knuckle. No chemical or overpowering odor. One odd thing. The original order came in a box that looked like the Amazon loader threw it into the back of the van from about 50 feet away .... The bottles cap was destroyed and the soap had leaked into the box. Amazon quickly replaced the item with a new bottle no charge and didn't expect me to return the damaged bottle of course. Thing is the second box came in the same condition. Looked like the punter for the Ravens drop kicked it from the 30 into the back of the truck. Luckily the bottle was undamaged this time.
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Reviewed in the United States on April 11, 2026
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Samantha Meyer
Lowell, US
★★★★★ 5
Convenient refill that lasts a long time
Size: 50 Fl Oz (Pack of 1), Scent: Gentle & Mild
I bought this hand soap refill to save money and reduce plastic waste, and overall I’ve been very pleased with it. The soap has a pleasant scent that isn’t too strong, and it leaves my hands feeling clean without making them feel dry afterward. I also like how easy it is to refill existing dispensers instead of constantly buying new bottles. The large refill size lasts much longer than expected, which is convenient for a busy household. However, pouring the soap into smaller dispensers can be a little messy if you’re not careful. The packaging is somewhat bulky as well. Overall, it’s an economical and practical option that works very well for everyday hand washing.
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Reviewed in the United States on May 25, 2026
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Tony
Boise, US
★★★★★ 5
Great product at even greater price!
Size: 50 Fl Oz (Pack of 2), Scent: Milk & Honey
This hand soap works very well, has a great scent, and costs less than half of inferior national brands. I have purchased 4 large refill bottles so far.
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Reviewed in the United States on May 29, 2026

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