{"product_id":"bobbly-s-tdc-hop-up-chamber-for-vfc-ghk-ar15-m4-gbbrs","title":"Bobbly's Precision TDC Hop-Up Chamber for VFC AR15 \/ M4 \/ APFG MCX GBBR","description":"\u003cstyle\u003e\n.cp-product-description {\nfont-family: Arial, sans-serif;\nline-height: 1.65;\ncolor: #222;\n}\n.cp-product-description .cp-warning {\nbackground: #fff8e6;\nborder: 1px solid #e7c46a;\npadding: 14px 16px;\nmargin-bottom: 22px;\nborder-radius: 4px;\nfont-size: 14px;\n}\n.cp-product-description .cp-section {\nmargin-bottom: 28px;\n}\n.cp-product-description h2 {\nfont-size: 22px;\nmargin: 0 0 14px;\nborder-bottom: 1px solid #e5e5e5;\npadding-bottom: 8px;\n}\n.cp-product-description p {\nmargin: 0 0 12px;\n}\n.cp-product-description ul {\nmargin: 0;\npadding-left: 20px;\n}\n.cp-product-description li {\nmargin-bottom: 8px;\n}\n.cp-product-description .cp-spec-table {\nwidth: 100%;\nborder-collapse: collapse;\nmargin-top: 10px;\n}\n.cp-product-description .cp-spec-table th,\n.cp-product-description .cp-spec-table td {\nborder: 1px solid #e5e5e5;\npadding: 10px 12px;\ntext-align: left;\nvertical-align: top;\nfont-size: 14px;\n}\n.cp-product-description .cp-spec-table th {\nbackground: #f8f8f8;\nwidth: 34%;\n}\n.cp-product-description .cp-note {\nfont-size: 13px;\ncolor: #666;\nmargin-top: 10px;\n}\n.cp-product-description .cp-alert {\nbackground: #f4f7fb;\nborder: 1px solid #c9d7ee;\npadding: 16px;\nborder-radius: 4px;\nmargin-top: 12px;\nfont-size: 14px;\n}\n\u003c\/style\u003e\n\u003cdiv class=\"cp-product-description\"\u003e\n\u003cdiv class=\"cp-warning\"\u003e\n\u003cstrong\u003e⚠️ Important:\u003c\/strong\u003e This hop-up chamber is intended for experienced GBB users and tuning enthusiasts. Depending on platform tolerances and build configuration, minor fitting work may be required.\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003eBobbly Precision TDC Hop-Up Chamber for VFC AR15 \/ M4 \/ APFG MCX GBBR\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBobbly Precision TDC Hop-Up Chamber\u003c\/strong\u003e is a modern TDC-style upgrade solution designed for the \u003cstrong\u003eVFC AR15 \/ M4 GBBR platform\u003c\/strong\u003e as well as the \u003cstrong\u003eAPFG MCX series\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBuilt around a clean and practical adjustment concept, this chamber provides more consistent pressure application and improved tuning precision compared to standard factory-style hop-up systems.\u003c\/p\u003e\n\u003cp\u003eThe chamber follows the familiar dimensions and compatibility standard widely adopted within the modern VFC GBB ecosystem while introducing several refinements aimed at practical usability and broader compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/5923\/8961\/files\/BB0037_Explosive.jpg?v=1778998628\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003eTDC Adjustment System\u003c\/h2\u003e\n\u003cp\u003eThe chamber uses a \u003cstrong\u003eTop Dead Center (TDC) adjustment system\u003c\/strong\u003e, allowing more direct and consistent hop pressure application onto the bucking.\u003c\/p\u003e\n\u003cp\u003eAdjustment is performed similarly to the \u003cstrong\u003enewer VFC and GHK V3-style systems\u003c\/strong\u003e, using an \u003cstrong\u003eM2 Allen key through the fake shell ejection port\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eExisting factory-style VFC and GHK adjustment tools can also be used, and Bobbly Precision adjustment tools will be available as a dedicated companion solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTDC-style hop-up adjustment system\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with VFC AR15 \/ M4 GBBR and APFG MCX platforms\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eAdjustment via \u003cstrong\u003eM2 Allen key \u003c\/strong\u003efrom behind, or GHK or VFC hop up adjustment tool from the fake ejection port is recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eThe custom-designed adjustment grub screw provides exceptionally \u003cstrong\u003eprecise hop-up tuning with clear tactile feedback\u003c\/strong\u003e. Additionally, two side-mounted locking grub screws with tensioned roller balls create a \u003cstrong\u003eunique dual-side anti-movement system\u003c\/strong\u003e, helping the hop-up setting remain stable and consistent even under the recoil impulse of demanding GBBR platforms.\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved C-clip design\u003c\/strong\u003e with support for \u003cstrong\u003eVSR inner barrels\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned as a practical and affordable performance upgrade for the VFC GBB ecosystem\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003eIncluded CNC POM Shim Pieces\u003c\/h2\u003e\n\u003cp\u003eTo improve compatibility across different models, the package includes two CNC-machined plastic shim spacers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3mm blue shim \u003c\/strong\u003e– for VFC AR15 and M4 GBB models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2mm red shim\u003c\/strong\u003e – for APFG MCX platforms, must be used together with the Bobbly Precision enhanced chamber base\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen used on APFG MCX GBB, must be used together with our chamber base:\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/clutch-precision.com\/products\/vfc-mcx-apfg-rattler-gbb-enhanced-chamber-base-with-4uad-support?_pos=1\u0026amp;_sid=968d443f3\u0026amp;_ss=r\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e View Enhanced APFG MCX Chamber Base \u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003eIncluded TDC Precision Bucking\u003c\/h2\u003e\n\u003cdiv class=\"cp-alert\"\u003e\n\u003cp\u003eAs an included bonus, the package also contains one \u003cstrong\u003e70 degree TDC Precision Bucking\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBefore installation, the \u003cstrong\u003eside wing of the bucking needs to be trimmed\u003c\/strong\u003e for proper fitment within the chamber system.\u003c\/p\u003e\n\u003cp\u003eAdditional buckings:\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/clutch-precision.com\/products\/tdc-hop-up-rubber?_pos=1\u0026amp;_sid=6b18891a1\u0026amp;_ss=r\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e View TDC Hop-Up Rubber \u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003eCompatibility Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with \u003cstrong\u003eVFC AR15 \/ M4 GBBR platforms, not HK416A5\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with \u003cstrong\u003eAPFG MCX series only together with Bobbly 4UAD Chamber Base\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupports \u003cstrong\u003eVSR inner barrels\u003c\/strong\u003e due to revised C-clip geometry\u003c\/li\u003e\n\u003cli\u003eGHK compatibility has been tested successfully, although \u003cstrong\u003eminor sanding or fitting work may be required\u003c\/strong\u003e depending on the build\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003eWhy Upgrade?\u003c\/h2\u003e\n\u003cp\u003eCompared with standard factory hop-up chambers, the Bobbly Precision TDC chamber offers a more refined adjustment system, improved consistency, and broader tuning flexibility.\u003c\/p\u003e\n\u003cp\u003eIt is especially attractive for users looking for an affordable and performance-oriented TDC solution within the VFC \/ GBB ecosystem while maintaining compatibility with commonly used tuning components and tools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"cp-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePlatform Compatibility\u003c\/th\u003e\n\u003ctd\u003eVFC AR15 \/ M4 GBBR, APFG MCX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdjustment Type\u003c\/th\u003e\n\u003ctd\u003eTDC (Top Dead Center)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdjustment Tool\u003c\/th\u003e\n\u003ctd\u003eM2 Allen key\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdjustment Access\u003c\/th\u003e\n\u003ctd\u003eThrough fake shell ejection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInner Barrel Compatibility\u003c\/th\u003e\n\u003ctd\u003eVSR compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded Bucking\u003c\/th\u003e\n\u003ctd\u003e70° TDC Precision Bucking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded Shims\u003c\/th\u003e\n\u003ctd\u003e2mm + 3mm CNC spacers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cp-section\"\u003e\n\u003ch2\u003ePackage Disclaimer\u003c\/h2\u003e\n\u003cp\u003eThis product is intended for \u003cstrong\u003eairsoft use only\u003c\/strong\u003e. Due to varying tolerances between different manufacturers and production batches, minor fitting or sanding work may occasionally be required. This is normal for advanced GBB tuning parts and does not constitute a defect.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bobbly Precision","offers":[{"title":"Default Title","offer_id":58056959590787,"sku":"BB0038","price":64.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/5923\/8961\/files\/BB0038-AR_Chamber_Assembly_1.png?v=1778938033","url":"https:\/\/clutch-precision.com\/de-eu\/products\/bobbly-s-tdc-hop-up-chamber-for-vfc-ghk-ar15-m4-gbbrs","provider":"Clutch Precision","version":"1.0","type":"link"}