4UANTUM MAGNUS PRO Precision TDC Hop Chamber (VFC/GHK AR) GBB

The 4UANTUM MAGNUS PRO Precision TDC Hop-Up Chamber is a precision upgrade for VFC and GHK AR gas blowback rifles, engineered for repeatable hop-up performance and straightforward tuning. Its true vertical Top-Dead-Center movement keeps the pressure point fixed across all hop-up settings for consistent trajectory.

• Material: Precision machined from solid 6061 aluminium billet for exceptional rigidity and durability.
• Movement: True vertical TDC (Top-Dead-Center) movement maintains a constant pressure point, ensuring consistency across the hop-up range.
• Locking: Self-centring tri-lug locking centers the inner barrel and secures it firmly in place to reduce drift.
• Bucking sleeve: CNC machined bucking sleeve precisely centers hop-up bucking orientation for lasting accuracy.
• Adjustability: Easy-access adjustment dial visible through the ejection port; can be tuned with any pointed tool without disassembly.
• Compatibility: GHK AR GBB installs without the spacer; VFC AR GBB installs with the included spacer.

Designed for dedicated airsoft players seeking repeatable accuracy and streamlined maintenance, this chamber minimizes hop-up drift and maintains barrel alignment during use. The combination of a rigid aluminium build, precise centering mechanisms, and a user-friendly dial provides reliable results in a variety of field conditions. Installation notes ensure you can get to tuning quickly: use no spacer for GHK AR systems and include the spacer for VFC AR systems to achieve optimal alignment right away.