Hop-Up Chamber TDC Magnus Pro for AR GBBR GHK/VFC | 4UAD

Hop-Up Chamber TDC Magnus Pro for AR GBBR GHK/VFC | 4UAD – hop-up unit for your replica

This hop-up chamber from 4UAD brings TDC technology (Top Dead Center) to your AR GBBR platform. The heart of consistent BB flight lies in the hop-up unit, and this Magnus Pro chamber ensures stable pressure on your hop-up rubber by always keeping the pressure point at the top. Whether you run a GHK or VFC AR GBBR, this GBBR hop-up chamber is developed for airsoft players who want consistent performance during their skirmishes. You replace your standard hop-up unit when you notice your BB flight becomes inconsistent or when you want more tuning options for different BB weights.

Technical specifications

The Magnus Pro is CNC-machined from aluminium with a black anodised finish. The TDC system uses an adjustment wheel that is accessible via the ejection port of your replica. The tri-lug lock keeps your inner barrel centred with three locking points. The chamber comes complete with a CNC-tuned hop-up sleeve, O-rings, a spacer for VFC compatibility, and three small balls for the TDC mechanism. The entire unit weighs significantly more than standard hop-up units due to the aluminium construction.

Compatibility and application

This hop-up chamber fits AR-style GBBR systems from GHK and VFC. For GHK replicas, you mount the unit directly; for VFC systems, you use the included spacer. Installation requires basic knowledge of GBBR internals and disassembling your upper receiver. The TDC system is suitable for both standard builds and advanced DMR setups where consistency is crucial. Please note: this chamber is specifically for GBBR platforms and does not work in AEG systems.

Ready to add the Hop-Up Chamber TDC Magnus Pro for AR GBBR GHK/VFC | 4UAD to your setup?