APFG MCX GBB TDC Hop Up Chamber Full Set

Full Set: This bundle combines the Bobbly Precision TDC Hop-Up Chamber and the Enhanced APFG MCX Chamber Base into one complete, ready-to-install upgrade package — everything you need for a precision TDC hop-up build on your APFG / VFC MCX GBB. ⚠️ Important: This set is specifically designed for the APFG / VFC MCX GBB platform (Rattler / Legacy / SPEAR LT). Not compatible with MPX or M7 systems. Intended for experienced GBB users — minor fitting work may occasionally be required. What's in the Set Bobbly Precision TDC Hop-Up Chamber — TDC-style chamber with dual-side anti-movement locking system, VSR inner barrel support, and 70° TDC Precision Bucking included Enhanced APFG MCX Chamber Base — CNC-machined T6 aluminum with hard anodizing and black nitrided steel components; reinforced front structure for steel outer barrel builds 2mm red CNC POM shim — required spacer for APFG MCX fitment One 70° TDC Precision Bucking — included with the chamber Why This Set? The Bobbly Precision TDC Chamber and the Enhanced MCX Chamber Base were engineered to work together. The chamber base provides the structural foundation — reinforced for steel outer barrels and machined to accept the TDC chamber directly with no modification. The TDC chamber delivers precise, repeatable hop-up adjustment via M2 Allen key through the fake shell ejection port. Buying the set ensures full compatibility out of the box and saves you the guesswork of sourcing and matching parts individually. Key Features TDC adjustment system — consistent pressure application, tunable via M2 Allen key or GHK/VFC-style ejection port tool Dual-side anti-movement locking — tensioned roller ball grub screws keep hop setting stable under GBBR recoil Reinforced chamber base — handles the stress of heavy steel outer barrels without flex or thread wear VSR inner barrel compatible — revised C-clip geometry supports VSR-spec barrels Invisible upgrade — once installed, the entire assembly sits hidden inside the rifle for a fully stock external appearance Drop-in for APFG MCX — no modification required when using the included 2mm red shim Compatibility Platform Compatibility Notes APFG / VFC MCX GBB (Rattler / Legacy / SPEAR LT) ✔ Compatible Designed specifically for this platform. Use included 2mm red shim. APFG MPX GBB ✘ Not Compatible Different chamber geometry. APFG M7 GBB ✘ Not Compatible Revised internal structure and different chamber layout. Package Disclaimer This product is intended for airsoft use only. Due to manufacturing tolerances between different GBB platforms and aftermarket parts, minor fitting work may occasionally be required. This is normal for advanced GBB tuning parts and does not constitute a defect.