[Pre-Order] VFC MCX APFG Rattler GBB Enhanced Chamber Base with 4UAD Support

In production, launch end December 2025

This upgraded chamber base is CNC–machined from durable T6 aluminum with hard anodizing & black nitrite steel and engineered for a precise, tight fit within the VFC MCX APFG GBB platform. Its reinforced structure and optimized thread geometry deliver a major durability boost—especially when pairing the system with heavier steel outer barrels.

Key Highlights

• Direct compatibility with the 4UANTUM Magnus Pro AR TDC Hop-Up Chamber (VFC/GHK AR/M4 GBB)
  The Magnus Pro chamber installs directly into this chamber base with no modification required. Adjust your hop-up exactly as before via the fake ejection port—clean, intuitive, and functional.
• Invisible internal upgrade for maximum realism
  Once installed, the chamber base is completely hidden. You can remove the OEM external hop-up adjustment rod entirely, giving your MCX build a far more authentic appearance.
• Ready for steel outer barrels (separately available)
  The redesigned front section features significantly strengthened material (steel) to support heavy steel outer barrels with no flex or risk of stripping.

Compatibility Table