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Home » Accessories & Parts » Gas Gun Parts » Gas Gun Hop-Up

Maxx Model CNC Aluminum M4T Hopup Chamber w/ Adjuster for Tokyo Marui MWS M4 Gas Blowback Rifles

ID: 122687 (HU-MX-HOP040M4T)
MX-HOP040M4T
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Hopup unit may require assembling
Maxx Model Products

$109.00

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The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.

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Product Description

Features

  • Machined from a solid aircraft aluminum block with tight tolerances to achieve the most accuracy, consistency, and durability
  • Performed accurately and consistently for Tokyo Marui MWS M4 Gas Blowback Airsoft Rifle
  • Precision Rotary Dial Knob with a number indicator for precise hopup adjustment
  • Adjustable Bolt Stopper to mitigate the Bolt Carrier bounce to eliminate double feeding
  • Compatible with most GBB Rubber Buckings without losing FPS or dropping BBs ensuring the BBs shooting accurately and consistently on every single shot
  • Equipped with the Aluminum Locking C-Clip and Taper Locking Sleeve to keep the Inner Barrel securely in place without wobbling and twisting
  • Re-engineered the Dual-Arm-Control system to the Single-Arm-Control system (PATENT PENDING) which allows the system to work precisely and accurately without unnecessary oscillations and instability
  • Removable steel pivot pin for ease of setup and maintenance
CNC Aluminum Hopup Chamber/Adjuster M4T set is precisely machined from a solid Aluminum block to perform accurately and consistently for Tokyo Marui MWS M4 Gas Blowback Airsoft Rifle. The Hopup Adjuster M4T unit is built with a unique Rotary Dial Knob, a number indicator for precise hopup adjustment, and to prevent shifting under vibration. The Bolt Stopper/Damper is also adjustable to mitigate the Bolt Carrier bounce to eliminate double feeding of BBs. The Hopup Chamber M4T unit is fully compatible with most GBB Rubber Buckings without losing FPS or dropping BBs ensuring the BBs shooting accurately and consistently on every single shot.

The Hopup Chamber M4T unit is also equipped with the Aluminum Locking C-Clip and Taper Locking Sleeve to keep the Inner Barrel securely in place without wobbling and twisting. More than that, the Hopup Chamber/Adjuster M4T system is wisely designed and controlled by a Single-Arm-Control (PATENT PENDING) which allows the system to work precisely and accurately without unnecessary oscillations and instability on the Dual Arm Control systems.

Manufacturer: Maxx Model

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.

1 Customer Review

(Write a review)

by Luis C. on 09/23/2025
"Very nice hop up unit. The packaging and the fitment was spot on. Very smooth adjustment. Definitely recommend if you're looking for a high quality replacement hop up.

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Maxx Model Products

About Maxx Model Products

Maxx Model Products, Inc. began in 2001 as a company known by Microheli.com based in Canada, we designed and manufactured high quality upgrade parts and accessories for RC Helicopters, Drones, and Cars. Starting in 2016, Maxx took its experience in high quality RC components and expanded to Airsoft. Maxx launched itself into the Airsoft market with the release of our original M4 PRO hop-up unit. Through feedback from the community and constant improvements, we have achieved the most advanced M4 hop-up unit with the ME model. Taking what we learned in that process, Maxx now brings our attention to other platforms. With our years of experience Maxx looks to manufacture more advanced and innovative products for the whole market. Maxx Model Products, Inc. is a registered business in Canada.