{"title":"Rifle Hopups","description":"","products":[{"product_id":"maxx-hopup-chamber-m4","title":"MAXX Model CNC Aluminum HopUp Chamber for M4","description":"\u003cdiv id=\"wsite-com-product-info\"\u003e\r\n\u003cdiv id=\"wsite-com-product-info-inner\"\u003e\r\n\u003cdiv id=\"wsite-com-product-short-description\" class=\"open\"\u003e\r\n\u003cdiv class=\"paragraph\"\u003e\r\n\r\n\u003cstrong\u003eSpecifically for HPA MTW Milspec, Forged, Billet and MTW-9 series.\u003c\/strong\u003e\r\n\r\nThe MAXX Model CNC Aluminum HopUp Chamber for M4 is the best hopup unit on the market.  It has many extra pieces to allow for perfect hop and accuracy.\r\n\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e","brand":"MAXX","offers":[{"title":"Default Title","offer_id":43599736307782,"sku":"MX-HOP020MW","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/M4W.jpg?v=1753350580"},{"product_id":"maxx-hopup-chamber-pro-m4","title":"MAXX Model CNC Aluminum HopUp Chamber PRO for M4","description":"\u003cdiv id=\"wsite-com-product-info\"\u003e\r\n\u003cdiv id=\"wsite-com-product-info-inner\"\u003e\r\n\u003cdiv id=\"wsite-com-product-short-description\" class=\"open\"\u003e\r\n\u003cdiv class=\"paragraph\"\u003e\r\n\u003cul\u003e\r\n \t\u003cli\u003e\u003cstrong\u003eM4i (Silver) - for specifically ICS CXP\/CS4\/EBB (include old models) M4\/M16 AEG series\u003c\/strong\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cstrong\u003eM4A (Red) - for Tokyo Marui style (including G\u0026amp;G, KRYTAC, except KWA) Standard M4\/M16 AEG series\u003c\/strong\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cstrong\u003eM4P (Blue) - for HPA PolarStar Engines on standard M4\/M16 platform\u003c\/strong\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\nThe MAXX Model CNC Aluminum HopUp Chamber PRO for M4 is the best hopup unit on the market.  It has a bottom chamber that prevents BB's from dropping when switching magazines.  It has many extra pieces to allow for perfect hop and accuracy.\r\n\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e","brand":"MAXX","offers":[{"title":"M4i","offer_id":43599736406086,"sku":"MX-HOP010MI","price":69.99,"currency_code":"USD","in_stock":true},{"title":"M4a","offer_id":43599736438854,"sku":"MX-HOP010MA","price":69.99,"currency_code":"USD","in_stock":true},{"title":"M4p","offer_id":43599736471622,"sku":"MX-HOP010MP","price":69.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/M4A-Group1.jpg?v=1753350583"},{"product_id":"airtech-studios-advanced-m4-standard-chamber-r-hop-arm-m-nub","title":"Airtech Studios Advanced M4 Standard Chamber R-HOP Arm \u0026 M-nub","description":"This M4 hop up arm is a great upgrade for aim improvement and constancy! This hop up is great if you're looking of going with an R-Hop or M-Nub.\r\n\r\n ","brand":"Airtech Studios","offers":[{"title":"Default Title","offer_id":43599738011718,"sku":"M4-TDC-RHOP","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/stock-hop.jpg?v=1753350614"},{"product_id":"maxx-cnc-aluminum-hop-up-chamber-m4g-for-standard-m4","title":"MAXX CNC Aluminum HopUp Chamber M4G (For Standard M4)","description":"Maxx Model CNC Hop up Chamber M4G is compatible with :\r\n\r\n- Standard M4 replica based on Tokyo Marui \/ VFC and clones that share the same specifications\r\n\r\n- Maple Leaf Wonder \u0026amp;amp; Super GBB hop-up rubber.\r\n\r\n- Other GBB rubbers are compatible but this requires cutting the centering flat with a cutter.\r\n\r\nPlease note that this chamber is not compatible with standard AEG rubber, you will need both GBB rubber and GBB inner barrel to make it work on your M4 AEG","brand":"MAXX","offers":[{"title":"Default Title","offer_id":43599812001862,"sku":"MX-HOP020MG","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/CNC-Aluminum-Hopup-Chamber-M4G-for-Standard-M4.jpg?v=1753351443"},{"product_id":"maxx-cnc-aluminum-hop-up-chamber-m4e-for-standard-m4","title":"MAXX CNC Aluminum HopUp Chamber M4E (For Standard M4)","description":"\u003cdiv class=\"flex-1 overflow-hidden\"\u003e\r\n\u003cdiv class=\"h-full\"\u003e\r\n\u003cdiv class=\"react-scroll-to-bottom--css-lazsc-79elbk h-full\"\u003e\r\n\u003cdiv class=\"react-scroll-to-bottom--css-lazsc-1n7m0yu\"\u003e\r\n\u003cdiv class=\"flex flex-col text-sm md:pb-9\"\u003e\u003carticle class=\"w-full text-token-text-primary focus-visible:outline-2 focus-visible:outline-offset-[-4px]\" dir=\"auto\" tabindex=\"0\" data-testid=\"conversation-turn-7\" data-scroll-anchor=\"true\"\u003e\r\n\u003cdiv class=\"text-base py-[18px] px-3 md:px-4 m-auto md:px-5\"\u003e\r\n\u003cdiv class=\"mx-auto flex flex-1 gap-4 text-base md:gap-5 lg:gap-6 md:max-w-3xl\"\u003e\r\n\u003cdiv class=\"group\/conversation-turn relative flex w-full min-w-0 flex-col agent-turn\"\u003e\r\n\u003cdiv class=\"flex-col gap-1 md:gap-3\"\u003e\r\n\u003cdiv class=\"flex max-w-full flex-col flex-grow\"\u003e\r\n\u003cdiv class=\"min-h-[20px] text-message flex w-full flex-col items-end gap-2 whitespace-pre-wrap break-words [.text-message+\u0026amp;]:mt-5 overflow-x-auto\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"bf576e2c-a1b7-4a7e-a802-edd07f656111\"\u003e\r\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\"\u003e\r\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert dark\"\u003e\r\n\u003cul\u003e\r\n \t\u003cli\u003eMaxx Model presents its latest and newest hop chamber.\u003c\/li\u003e\r\n \t\u003cli\u003eThis chamber accepts standard AEG buckings.\u003c\/li\u003e\r\n \t\u003cli\u003eThe chamber features a slight redesign from previous models.\u003c\/li\u003e\r\n \t\u003cli\u003eThe updated hop-ups eliminate screws on the hop-up arm, replacing them with an O-ring that holds the pivot pin.\u003c\/li\u003e\r\n \t\u003cli\u003eThe new internal design boasts tighter tolerances to enhance consistency and accuracy.\u003c\/li\u003e\r\n \t\u003cli\u003eBBs align straight and consistent 95% of the time.\u003c\/li\u003e\r\n \t\u003cli\u003eBB position seats consistently after each shot and stacks perfectly.\u003c\/li\u003e\r\n \t\u003cli\u003eThe chamber includes extra O-ring stabilizers and adapter shims.\u003c\/li\u003e\r\n \t\u003cli\u003eIt is made from CNC aluminum.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv class=\"mt-1 flex gap-3 empty:hidden -ml-2\"\u003e\r\n\u003cdiv class=\"items-center justify-start rounded-xl p-1 flex\"\u003e\r\n\u003cdiv class=\"flex items-center\"\u003e\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv class=\"pr-2 lg:pr-0\"\u003e\u003c\/div\u003e\r\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\r\n\u003cdiv class=\"text-center\"\u003e\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv class=\"absolute\"\u003e\r\n\u003cdiv class=\"flex items-center justify-center\"\u003e\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/article\u003e\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv class=\"md:pt-0 dark:border-white\/20 md:border-transparent md:dark:border-transparent w-full\"\u003e\r\n\u003cdiv class=\"text-base px-3 md:px-4 m-auto md:px-5\"\u003e\r\n\u003cdiv class=\"mx-auto flex flex-1 gap-4 text-base md:gap-5 lg:gap-6 md:max-w-3xl\"\u003e\u003cform class=\"w-full\" aria-haspopup=\"dialog\" aria-expanded=\"false\" aria-controls=\"radix-:r4:\" data-state=\"closed\"\u003e\r\n\u003cdiv class=\"relative flex h-full max-w-full flex-1 flex-col\"\u003e\r\n\u003cdiv class=\"absolute bottom-full left-0 right-0 z-20\"\u003e\u003c\/div\u003e\r\n\u003cdiv class=\"flex w-full items-center\"\u003e\r\n\u003cdiv class=\"flex w-full flex-col gap-1.5 rounded-[26px] p-1.5 transition-colors bg-[#f4f4f4] dark:bg-token-main-surface-secondary\"\u003e\r\n\u003cdiv class=\"flex items-end gap-1.5 md:gap-2\"\u003e\r\n\u003cdiv class=\"flex min-w-0 flex-1 flex-col pl-4\"\u003e\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/form\u003e\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e","brand":"MAXX","offers":[{"title":"Default Title","offer_id":43599812132934,"sku":"MX-HOP020ME","price":79.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/CNC-Aluminum-Hopup-Chamber-M4E-for-Standard-M4.jpg?v=1753351445"},{"product_id":"nexxspeed-cnc-aluminum-hopup-chamber-for-m4-aeg","title":"NexxSpeed CNC Aluminum Hopup Chamber for M4 AEG","description":"\u003cp data-start=\"52\" data-end=\"93\"\u003e\u003cstrong data-start=\"52\" data-end=\"93\"\u003eCNC Aluminum Hopup Chamber for M4 AEG\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp data-start=\"95\" data-end=\"354\"\u003eThe design features an arm pressing on the Nub, made from steel sheets of varying thicknesses. These sheets combine to create the desired elasticity, helping to increase the accuracy and consistency of the BB. It comes with 3 different types of aluminum Nubs.\u003c\/p\u003e\r\n\u003cp data-start=\"356\" data-end=\"578\"\u003eYou can change the Gearbox input adapter. The input adapter has outside diameters of OD12mm, OD11.5mm, and OD11mm to ensure the hopup unit mounts accurately to the center of the nozzle outlet of the AEG Gearbox\/HPA Engine.\u003c\/p\u003e\r\n\u003cp data-start=\"580\" data-end=\"645\"\u003eFPS can increase by 10FPS to 30FPS compared to the stock setting.\u003c\/p\u003e\r\n\u003cp data-start=\"647\" data-end=\"931\"\u003eThe CNC Aluminum Hopup Chamber is precision-machined for accurate and consistent operation on the Tokyo Marui product line (including G\u0026amp;G, KRYTAC) Standard M4\/M16 AEG, ICS CXP\/CS4\/EBB (including old models) M4\/M16 AEG series, and HPA PolarStar Engines on the standard M4\/M16 platform.\u003c\/p\u003e\r\n\u003cp data-start=\"933\" data-end=\"946\"\u003e\u003cstrong data-start=\"933\" data-end=\"946\"\u003eIncluded:\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp data-start=\"948\" data-end=\"978\"\u003e1 x CNC Aluminum Hopup Chamber\u003c\/p\u003e\r\n\u003cp data-start=\"980\" data-end=\"990\"\u003e\u003cstrong data-start=\"980\" data-end=\"990\"\u003eUsage:\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp data-start=\"992\" data-end=\"1011\"\u003eFor use with M4 AEG\u003c\/p\u003e","brand":"NexxSpeed","offers":[{"title":"Silver","offer_id":43599866265670,"sku":"NS-HUAR002","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43599866298438,"sku":"ns-huar402","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Gold","offer_id":43599866331206,"sku":"NS-HUAR202","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":43599866363974,"sku":"NS-HUAR102","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Green","offer_id":43599866396742,"sku":"NS-HUAR602","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":43599866429510,"sku":"NS-HUAR302","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Purple","offer_id":43599866462278,"sku":"NS-HUAR702","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Grey","offer_id":43599866495046,"sku":"NS-HUAR502","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/nexxspeed-cnc-hopup-chamber-m4-aeg-all-color-variants.png?v=1788311611"},{"product_id":"polarstar-hop-up-thing","title":"PolarStar HopUp “Thing” TDC Chamber for V2 M4 AEG \u0026 HPA Rifles","description":"\u003ch1\u003ePolarStar Hop Up “Thing”\u003c\/h1\u003e\n\u003cp\u003eUpgrade your M4 or M16 airsoft rifle with a precision-machined hop-up chamber engineered for consistent adjustment, secure fitment, and reliable BB flight in both AEG and HPA builds.\u003c\/p\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe PolarStar Hop Up “Thing” is a premium TDC hop-up chamber manufactured in the USA from 6061-T6 aluminum. Machined in-house to tolerances of ±0.002 inch, this chamber provides a precise alternative to conventional cast hop-up units.\u003c\/p\u003e\n\u003cp\u003eAt its core is PolarStar’s TDC (Top Dead Center) slider system. The adjustment arm applies direct vertical pressure to the hop-up nub, helping create even contact with the bucking for a more consistent BB trajectory. Its modular construction also allows fitment to be tuned for compatible AEG and HPA configurations.\u003c\/p\u003e\n\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eTDC slider system for precise, repeatable hop adjustment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDirect vertical nub pressure for consistent BB flight\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCNC-machined 6061-T6 aluminum construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eModular design for AEG and HPA rifle builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision-machined to ±0.002-inch tolerances\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMade in the USA by PolarStar\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Machined 6061-T6 aluminum\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdjustment:\u003c\/strong\u003e TDC slider system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNub Compatibility:\u003c\/strong\u003e 3 × 4 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGearbox Lip:\u003c\/strong\u003e 0.305 inch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Medical Metal Gray\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Standard V2 M4\/M16 platforms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePolarStar Hop Up “Thing” chamber\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e0.305-inch gearbox lip\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e3 × 4 mm round nub\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eARO retaining O-ring installation tool\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFive shimming O-rings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMolded barrel clip\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eInternal installation, alignment, and testing are required. Verify chamber fitment, nozzle centering, bucking compatibility, feeding, and air seal before use. Professional installation is recommended for users unfamiliar with airsoft hop-up assemblies.\u003c\/p\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e","brand":"PolarStar","offers":[{"title":"Default Title","offer_id":44860094447686,"sku":null,"price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/Polarstar_Hop_up_Thing.png?v=1794238237"},{"product_id":"mechlabs-roto-pro-full-cnc-hop-up-chamber","title":"MechLabs ROTO PRO Buckingless TDC Hop Up Chamber for M4","description":"\u003ch2\u003eMechLabs ROTO PRO Buckingless TDC Hop Up Chamber for M4\u003c\/h2\u003e\n\u003cp\u003eUpgrade your HPA airsoft build with a fully CNC-machined hop-up chamber engineered for precise adjustment, reliable alignment, improved air seal, and consistent performance with heavier BBs.\u003c\/p\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe MechLabs ROTO Pro Hop-Up Chamber replaces the traditional rubber bucking with an innovative buckingless contact system. A large, precision-shaped nub is micro-injected directly onto the piston, creating a broad and stable contact surface that generates controlled, repeatable backspin.\u003c\/p\u003e\n\u003cp\u003eThis high-durometer contact material resists wear and deformation, helping eliminate common bucking problems such as tearing, swelling, uneven seating, and gradual performance loss. Its mechanically indexed, modular design keeps components properly aligned, while the adjustable rear section allows precise positioning against the nozzle for dependable feeding, efficient airflow, and shot-to-shot consistency.\u003c\/p\u003e\n\u003cp\u003eUnlike the polymer-bodied Standard model, the ROTO Pro is manufactured entirely from CNC-machined aluminum components. An enlarged adjustment wheel makes fine-tuning easier, making this premium airsoft hop-up chamber ideal for demanding HPA and competition builds.\u003c\/p\u003e\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFully CNC-machined aluminum construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInnovative buckingless hop-up design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLarge, high-contact precision nub\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConsistent backspin with heavier BBs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMechanically indexed self-alignment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdjustable rear section for nozzle positioning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnlarged wheel for precise hop-up adjustment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved feeding and air-seal consistency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e MechLabs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e ROTO Pro\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e HPA hop-up chamber\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC-machined aluminum\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 53mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 38mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned for MechLabs X-MOD HPA engines. An adjustable nozzle or correctly sized nozzle is required for proper air seal and performance.\u003c\/p\u003e\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMechLabs ROTO Pro Hop-Up Chamber\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible nozzle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eAssembly and precise nozzle-length adjustment may be required. Professional installation is recommended for best results.\u003c\/p\u003e","brand":"Mechlabs","offers":[{"title":"Default Title","offer_id":46456535842886,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/mechlabshopup_1.jpg?v=1787859424"},{"product_id":"mechlabs-roto-tdp-hop-up-chamber","title":"MechLabs ROTO Buckingless TDC Hop Up Chamber for M4","description":"\u003ch2\u003eMechLabs ROTO Buckingless TDC Hop Up Chamber for M4 – Standard\u003c\/h2\u003e\n\u003cp\u003eUpgrade your HPA airsoft rifle with a modular buckingless hop-up chamber engineered for precise alignment, dependable air seal, and consistent performance with heavier BBs.\u003c\/p\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe MechLabs ROTO TDP Hop-Up Chamber replaces the traditional rubber bucking with an innovative precision contact system. A large, specially shaped nub is micro-injected directly onto the piston, creating a broad, stable contact surface that produces controlled and repeatable backspin.\u003c\/p\u003e\n\u003cp\u003eIts high-durometer contact material resists wear and deformation while eliminating common bucking issues such as tearing, swelling, uneven seating, and installation misalignment. The modular, mechanically indexed construction keeps critical components properly positioned, helping improve BB feeding, airflow efficiency, accuracy, and shot-to-shot consistency.\u003c\/p\u003e\n\u003cp\u003eAn adjustable rear section allows the chamber to be positioned precisely against the nozzle for a reliable air seal. The standard ROTO TDP combines CNC-machined critical components with a lightweight polymer body and adjustment wheel, delivering the core performance of the ROTO system at an accessible price.\u003c\/p\u003e\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eInnovative buckingless hop-up design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLarge, high-contact precision nub\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDurable high-durometer contact material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMechanically indexed self-alignment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdjustable chamber-to-nozzle positioning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOptimized for HPA builds and heavier BBs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e MechLabs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e ROTO TDP\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Buckingless airsoft hop-up chamber\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBody:\u003c\/strong\u003e Lightweight polymer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCritical Components:\u003c\/strong\u003e CNC-machined\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOverall Length:\u003c\/strong\u003e Approximately 53mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOverall Height:\u003c\/strong\u003e Approximately 38mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned for compatible M4\/M16-style airsoft rifles using a standard Version 2 gearbox and AEG-pattern barrel system. Compatible platforms may include Tokyo Marui, G\u0026amp;G, Krytac, VFC, Maple Leaf, Madbull, Modify, TNT, Begadi, and similar builds.\u003c\/p\u003e\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMechLabs ROTO TDP Hop-Up Chamber\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMatching nozzle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eProfessional installation and tuning are recommended. An adjustable or correctly sized nozzle is required to achieve the best air seal, feeding, and shot-to-shot consistency.\u003c\/p\u003e","brand":"Mechlabs","offers":[{"title":"Default Title","offer_id":46456542953542,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/files\/mechlabshopup_2.jpg?v=1787859760"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2223\/6742\/collections\/nexxspeed-cnc-hopup-chamber-m4-aeg-all-color-variants.png?v=1794285714","url":"https:\/\/laairsoft.com\/collections\/rifle-hop-ups.oembed","provider":"LA Airsoft","version":"1.0","type":"link"}