{"product_id":"gate-eon-hop-up-chamber","title":"GATE EON Hop-Up Chamber — TDC Adjustment, CNC Aluminium","description":"\u003cdiv style=\"background:#edfaf1;border-left:4px solid #27ae60;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#1a6b3a;\"\u003eOne chamber, three colourways, one page.\u003c\/strong\u003e GATE’s CNC aluminium hop-up chamber with their TDC adjustment system, in the three housing-and-dial combinations we carry. Pick the colour from the dropdown; the chamber underneath is identical.\n\u003c\/div\u003e\u003cp\u003eMost hop-up problems are not hop-up problems. They are the chamber holding the barrel very slightly off centre, or letting the bucking collar roll, or applying pressure at an angle so the nub presses on one side of the BB instead of the top of it. A shot that leaves with sideways spin does not come back, and no amount of nub swapping will fix a chamber that cannot hold the parts square.\u003c\/p\u003e\u003cp\u003eThis is GATE’s answer to that. The adjustment runs on what they call TDC — top down centred — so pressure arrives on the top of the BB and stays there, which is the condition for a flat trajectory rather than a curving one. A redesigned POM C-clip stops the barrel rotating in the chamber, so once it is set it stays set, and the assembly is hard to get wrong.\u003c\/p\u003e\u003cp\u003eGATE machine the body from aluminium and the internal parts from POM, and claim a seal good enough that the usual trick of wrapping the bucking in tape is unnecessary. The dial gives fine adjustment across the full range of hop force regardless of which nub you run, and it fits barrels with standard and enlarged windows.\u003c\/p\u003e\u003cp\u003eIt is built around the rest of the GATE drivetrain: their own PULSAR S HPA engine and the EON complete V2 gearbox are the stated fits, and the chamber works best with a 21.25 mm nozzle. Outside that it is a standard V2-pattern chamber and behaves like one.\u003c\/p\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eSpecifications\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin:0 0 18px;\"\u003e\n\u003ctr style=\"background:#1B3A6B;color:#fff;\"\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eV2-pattern hop-up chamber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAdjustment\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTDC, top down centred, on a rotary dial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHousing\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC machined aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eInternals\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC machined POM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBarrel retention\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePOM anti-rotation C-clip, plus an offset version for longer bucking flanges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eNozzle\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eWorks best with a 21.25 mm nozzle, GATE’s own note\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBarrel windows\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eStandard and enlarged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eStated fits\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGATE PULSAR S HPA engine and the GATE EON complete V2 gearbox\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGATE Enterprise, Poland\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eNot stated by the manufacturer at time of writing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eIn the box\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin:0 0 18px;\"\u003e\n\u003ctr style=\"background:#1B3A6B;color:#fff;\"\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eItem\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eQty\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC aluminium hop-up chamber\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC POM hop-up arm\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC POM double-sided tensioner clamp, for standard and enlarged windows\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC POM R-hop tensioner\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC POM anti-rotation C-clip\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC POM anti-rotation C-clip, offset version\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCNC POM barrel spacer\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMounting screw\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eThe colourways we carry\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin:0 0 18px;\"\u003e\n\u003ctr style=\"background:#1B3A6B;color:#fff;\"\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eColourway\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eHousing and dial\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003ePart code\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTitanium \/ Violet\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTitanium housing, violet rotary dial\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eEON-HOP-TV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTitanium \/ Cyan\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTitanium housing, cyan rotary dial\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eEON-HOP-TC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCyan \/ Orange\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCyan housing, orange rotary dial\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eEON-HOP-CO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eGood to know before you buy\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eThe colour is the dial and the housing, nothing else.\u003c\/strong\u003e Every option on this page is the same chamber with the same internals at the same price. Choose on looks, because there is nothing else to choose on.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIt wants a 21.25 mm nozzle.\u003c\/strong\u003e GATE say so themselves. A shorter or longer nozzle will still function, but the seal was designed around that length and you are giving away the thing you bought the chamber for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSet it once, properly.\u003c\/strong\u003e The point of the anti-rotation clip and the dial is that a setting holds. Spend the time getting it right on a bench with a chrono rather than adjusting it a quarter turn at a time between games.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBuckings and nubs are separate.\u003c\/strong\u003e This is the chamber; what goes inside it is your choice and is in our \u003ca href=\"\/collections\/hop-rubber\" style=\"color:#1B3A6B;\"\u003ehop rubber section\u003c\/a\u003e. GATE claim a seal that does not need a tape fix, so start without one.\u003c\/p\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs there any difference between the colours?\u003c\/strong\u003e\u003cbr\u003eNone beyond the finish of the housing and the dial. Same chamber, same contents, same price, so the dropdown is purely cosmetic.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does TDC actually mean here?\u003c\/strong\u003e\u003cbr\u003eTop down centred. The adjustment pushes the nub straight down onto the top of the BB rather than slightly to one side, which is what keeps the trajectory flat instead of curving away.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it fit my gearbox?\u003c\/strong\u003e\u003cbr\u003eIt is a V2-pattern chamber. GATE state fitment with their PULSAR S HPA engine and the EON complete V2 gearbox; elsewhere treat it as a standard V2 chamber and ask us if your setup is unusual.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I still need to tape the bucking?\u003c\/strong\u003e\u003cbr\u003eGATE claim the seal is good enough without it. Fit it dry, chrono it, and only reach for a fix if the numbers tell you to.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does it weigh?\u003c\/strong\u003e\u003cbr\u003eNo weight is published for the chamber. The manufacturer does not publish that, ask us and we can weigh one before you commit.\u003c\/p\u003e\u003cdiv style=\"background:#fffbe6;border-left:4px solid #f0d060;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e\n⚠ \u003cstrong\u003eMind which C-clip you fit.\u003c\/strong\u003e Two are supplied and they are not interchangeable — the offset one is for buckings with a longer flange. Fitting the wrong one gives you a barrel that is not properly held, which looks like a hop problem and is not.\n\u003c\/div\u003e\u003cdiv style=\"background:#1B3A6B;color:#fff;padding:12px 16px;border-radius:6px;margin:18px 0 0;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#fff;\"\u003e💡 Titan Forge Airsoft tip:\u003c\/strong\u003e Chrono before and after fitting one of these, and write both numbers down. A chamber that seals better than the one it replaced will usually add velocity, and finding that out at a site chrono rather than on your own bench is how a gun gets sent back to the car. The rest of the brand is in \u003ca href=\"\/collections\/gate-enterprises\" style=\"color:#cdd6f4;\"\u003eour GATE section\u003c\/a\u003e.\n\u003c\/div\u003e","brand":"Gate","offers":[{"title":"Titanium \/ Violet","offer_id":54892702269816,"sku":"12488238","price":54.95,"currency_code":"GBP","in_stock":true},{"title":"Titanium \/ Cyan","offer_id":55714495824248,"sku":null,"price":54.95,"currency_code":"GBP","in_stock":true},{"title":"Cyan \/ Orange","offer_id":55714495857016,"sku":null,"price":54.95,"currency_code":"GBP","in_stock":false},{"title":"Titanium \/ Red","offer_id":55714503786872,"sku":null,"price":54.95,"currency_code":"GBP","in_stock":true},{"title":"Titanium \/ Orange","offer_id":55714503819640,"sku":null,"price":54.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/titanium-violet_719f1d20-5c00-4c95-9cb5-82ce50408cc0.jpg?v=1765457553","url":"https:\/\/www.titanforgeairsoft.com\/products\/gate-eon-hop-up-chamber","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}