MAXX CNC Aluminum Hopup Chamber M4W (for MTW M4)
SKU: 25780780722

MAXX CNC Aluminum Hopup Chamber M4W (for MTW M4)

Sale price$98.99 Regular price$109.99
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Description

MAXX CNC Aluminum Hopup Chamber M4W (for MTW M4)CNC Aluminum Hopup Chamber M4W unit is precisely machined to perform accurately and consistently on HPA MTW Milspec, Forged, Billet and MTW 9 series. The Hopup Chamber M4W unit is built with an aluminum Rotary Dial Knob for fine hopup adjustments, the precision Hopup Lever and 4mm Bucking Nubs to perform best with R Hop and Standard Hop to keep the BB shooting accurately and consistently on every single shot. The Hopup Chamber M4W unit is designed to

CNC Aluminum Hopup Chamber M4W unit is precisely machined to perform accurately and consistently on HPA MTW Milspec, Forged, Billet and MTW-9 series.

The Hopup Chamber M4W unit is built with an aluminum Rotary Dial Knob for fine hopup adjustments, the precision Hopup Lever and 4mm Bucking Nubs to perform best with R-Hop and Standard-Hop to keep the BB shooting accurately and consistently on every single shot. The Hopup Chamber M4W unit is designed to accept the HPA MTW Engine M4 nozzle length, and fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BB during use.

The Hopup Chamber M4W unit is wisely equipped with an interchangeable Inlet Adaptor OD11mm to ensure the hopup unit is inserted exactly in the center of the 11mm inner bore HPA Engine nozzle outlet without wobbling. 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.

Manufacturer: Maxx Model

Features

  • Machined from a solid aircraft aluminum block with tight tolerances to provide better accuracy, consistency, and durability
  • Precision rotary dial design for fine hopup adjustments
  • Re-engineered the hopup levers and nubs to work best with R-hop, Flat-Hop and Standard-Hop to keep the BBs shooting straight and accurate on every single shot
  • Accepted the HPA MTW Engine M4 nozzle length
  • 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, 3 compression springs on top, at bottom and in center of housing to ensure the hopup unit is exactly centered, straight and air tight
  • Compatible with any 11mm inner bore HPA Engine nozzle outlets
  • 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

Hopup Kit Includes:

  • 1 x CNC Aluminum Hopup Chamber M4W unit
  • 2 x CNC Acrylic Side Cover
  • 2 x CNC Brass 2.6mm 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 (OD11mm)


Overall Length: 51.15mm
Overall Height: 22mm
Inlet Adaptor Outer Diameter (to fit into HPA Nozzle Outlet): 11mm
Hub Outer Diameter (to fit into Outer Barrel): 12mm
Hub Inner Diameter (to fit Nozzle): 8mm
Application: For most HPA MTW Milspec, Forged, Billet and MTW-9 series rifles
Material: Aluminum 6061

Test Results: FPS might be increased from 10FPS to 30FPS over the stock setup. Please check your FPS!
Disclaimer: Professional installation highly recommended. Please use discretion when installing custom parts as fit and compatibility may vary. Modification may be required. Professional installation recommended.

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: 25780780722

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Kindle Customer
Louisville, US
★★★★★ 5
Sturdy piece
Size: 24 Inch, Color: Retro Grey Oak-light
Easy to put together. I bought to use as a spice rack in a small kitchen. It's a heavy piece. Can hold quite a lot.
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Reviewed in the United States on March 6, 2026
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Steve
Boise, US
★★★★★ 5
Perfect Blend of Style and Functionality!
Size: 48in, Color: 3tier
Couldn't be happier with the results! The combination of black galvanized pipes and thick wooden shelves adds a rustic yet modern touch to my decor. These shelves are incredibly sturdy and can hold a good amount of weight, making them perfect for towels and decorative items. I love how versatile they are; I can see them working well in the kitchen or living room too. The assembly was straightforward. Overall, these shelves are a fantastic space-saving solution that enhances the aesthetic of any room!
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Reviewed in the United States on June 13, 2025
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JZ
Natrona Heights, US
★★★★★ 5
Provide mix of rustic and modern vibes
Size: 48in, Color: 3tier, Size: 48in, Color: 3tier
Absolutely love how these turned out! The black pipes and chunky wooden shelves give off a perfect mix of rustic and modern vibes. Super sturdy too—they hold a good amount of weight, so I’ve been using them for books and a few decor pieces. They’re really versatile—would look great in home office or living room as well. Assembly was easy, nothing too tricky. Overall, a great way to save space and add some style to the room!
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Reviewed in the United States on June 30, 2025
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Lexie Crisp
Port Orchard, US
★★★★★ 5
Perfect!
Size: 48in, Color: 3tier
A little hard to line up but extremely beautiful and worth it!!
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Reviewed in the United States on December 31, 2025
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Dawn Ellen Sampson
Bozeman, US
★★★★★ 5
Great shelf !
Size: 48in, Color: 3tier
They look great ! Easy to install !
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Reviewed in the United States on November 13, 2025

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