4UANTUM Precision TDC Hop-Up Chamber MAGNUS by 4UAD
The 4UANTUM MAGNUS is a high-end CNC-machined hop-up chamber designed exclusively for the GHK Glock 17 Gen5 MOS. It features a true vertical TDC (Top-Dead-Center) adjustment, meaning the pressure point remains in the same position regardless of hop-up settings. This ensures maximum shot consistency and extended range as you can use heavier BBs. A precise ring-lifting mechanism eliminates misalignment and ensures smooth adjustment. The hop-up chamber includes an O-ring-equipped adjustment screw for easy, intuitive settings without loosening, which requires partial disassembly of the gun.
Warnings a Recommendations
Designed exclusively for GHK G17 / 45 Gen5 MOS GBB.
Not compatible with GHK G17 Gen3, DCG EMG TTI G34 / G34 MOS GBB (GHK G17 Gen3 system), or other Glock models from different brands.
Installation requires basic knowledge of hop-up function and gas blowback pistols.
Inner barrel and hop-up rubber are not included.
The recommended hop-up rubber is 4UANTUM Friction GBB.
Do not use with the stock GHK hop-up rubber.
Key Features
Precision CNC machining from 6061 aluminum alloy
Vertical TDC adjustment for maximum consistency
Sealed lift mechanism to prevent misalignment
O-ring-equipped adjustment screw for easy adjustments without loosening
Technical Specifications
Manufacturer: 4UAD
Material: 6061 aluminum alloy (main components), steel
Compatibility: GHK G17 / 45 Gen5 MOS
Color: Black
Package Contents
4UANTUM Precision TDC Hop-Up Chamber MAGNUS










