{"product_id":"gate-ptx-accuracy-upgrade-kit-v31","title":"GATE PTX Accuracy Upgrade Kit V31 — POM Nozzle \u0026 Stabiliser Set","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;\"\u003eA retrofit, not a replacement engine.\u003c\/strong\u003e The V31 kit swaps the accuracy-critical parts inside a PTX you already own — the nozzle, its spring and the pieces that hold the seal, hop-up chamber and inner barrel square to each other. The PULSAR S2 engine stays where it is.\n\u003c\/div\u003e\u003cp\u003eA PTX shoots as well as its nozzle lets it. The nozzle has to seal against the bucking on every cycle, return to the same place every time, and leave the inner barrel sitting straight while it does it. Get any of those three slightly wrong and the pistol still chronos fine and still groups badly, which is the frustrating bit — nothing feels broken.\u003c\/p\u003e\u003cp\u003eV31 attacks all three at once. The nozzle is machined from POM rather than the earlier material and arrives assembled with its two O-rings already fitted. A dedicated spring sets the return. Then three small stabilising parts — an O-ring positioning stabiliser, a hop-up chamber spacer and an inner-barrel stabiliser — take the slack out of the stack behind the barrel so the geometry stops moving between shots.\u003c\/p\u003e\u003cp\u003eGATE developed it as the successor to their V22 upgrade system, and the numbers below are theirs, from their own range work at 40 metres. They are averages across tested cohorts rather than a promise about your pistol, and we have published them as GATE measured them.\u003c\/p\u003e\u003cp\u003eWorth being clear about what this is not: it is a small bag of precision parts, not a tune-up you drop in. Fitting means opening the rear of the engine and the hop-up and barrel assembly, and the result depends on how carefully it goes back together.\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;\"\u003eFits\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGATE PTX pistols running the PULSAR S2 engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGenerations covered\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePTX 1.0 and PTX V22 — GATE publish a separate procedure for each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\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;\"\u003eAssembled V31 nozzle in POM, with two 11 × 1 mm O-rings fitted at the factory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAlso in the kit\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eNozzle spring, O-ring positioning stabiliser, 7 × 1.5 mm O-ring, POM hop-up chamber spacer, POM inner-barrel stabiliser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSupersedes\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eThe earlier V22 upgrade system — a different nozzle material and a revised component layout, not a running change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eEngine required\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eNo. The kit retrofits into the PULSAR S2 you already own\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBucking GATE recommend\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMaple Leaf AUTOBOT 60°, rubber version — explicitly not the silicone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eManufacturer part code\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePTX-KITv3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eEAN\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e5904121822617\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eWhat GATE measured at 40 metres\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;\"\u003eMetric\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eV22\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eV31\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eChange\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMean SCORE\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e31.6\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e67.2\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e+112.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMean MOA\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e116.4\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e53.6\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e53.9% tighter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSeries meeting GATE acceptance criteria\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e32.3%\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e96.2%\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e+63.9 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHits inside 26 × 34 cm\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e20.0%\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e67.8%\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e+47.9 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eRadius containing half the hits\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e32.4 cm\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e12.4 cm\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e61.8% smaller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMedian series-centre radius\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e15.1 cm\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e6.1 cm\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e59.3% smaller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eGATE’s best recorded individual 50-shot series reached MOA 25.32 and SCORE 87. Their own caveat applies and we will repeat it: these are averages and records from controlled testing, and real performance follows BBs, hop adjustment, pressure, valve timing, barrel condition, lubrication and assembly quality.\u003c\/p\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eGood to know before you buy\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIt is a parts kit, not a bolt-on.\u003c\/strong\u003e You need access to the rear section of the PULSAR S2 and to the hop-up and inner-barrel assembly. An experienced user or a technician with the official instructions will be fine; a first strip-down on a competition pistol the night before a game is a poor plan. We run a bench service if you would rather not — details on our \u003ca href=\"\/pages\/hpa-tech-service\" style=\"color:#1B3A6B;\"\u003eHPA tech service\u003c\/a\u003e page.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRetune Dp afterwards, from the bottom up.\u003c\/strong\u003e The kit changes how the nozzle seals and returns, so the dwell setting that suited the old parts will not be the right one. GATE ask for the lowest Dp that still cycles reliably, and the V31 instructions give the method.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe bucking is part of the result.\u003c\/strong\u003e GATE got their figures with a Maple Leaf AUTOBOT 60° in the rubber compound and say so specifically — the silicone version is a different material with different behaviour. Our \u003ca href=\"\/collections\/hop-rubber\" style=\"color:#1B3A6B;\"\u003ehop rubber section\u003c\/a\u003e is the place to look.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTwo PTX generations, two procedures.\u003c\/strong\u003e The method and the parts you reuse from the original pistol differ between PTX 1.0 and PTX V22, so work from the version of the manual that matches your pistol rather than the first one you find.\u003c\/p\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDo I need a new PULSAR S2 engine as well?\u003c\/strong\u003e\u003cbr\u003eNo. That is the point of it. The kit replaces the nozzle, the spring and the stabilising parts inside the engine and hop-up you already have.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the same thing as the V22 kit?\u003c\/strong\u003e\u003cbr\u003eNo. V31 uses a POM nozzle and a reworked component arrangement that GATE developed after V22. If you fitted the older kit, this is the step past it rather than a spare for it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill my pistol hit the figures in that table?\u003c\/strong\u003e\u003cbr\u003eTreat them as what GATE’s test pistols averaged, not as a specification. Your BBs, hop setting, pressure, barrel condition and the care taken on reassembly all move the result.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I fit it myself?\u003c\/strong\u003e\u003cbr\u003eIf you have had the engine apart before and you follow GATE’s manual, yes. It wants clean hands, correct lubrication and a nozzle that moves freely when you are done. If that does not sound like a pleasant evening, send it to us.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich hop rubber should I run with it?\u003c\/strong\u003e\u003cbr\u003eThe Maple Leaf AUTOBOT 60° in rubber, which is what GATE specify for the published results. Not the silicone version of the same bucking.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it change the muzzle energy?\u003c\/strong\u003e\u003cbr\u003eGATE do not publish a velocity figure for the kit — the manufacturer does not publish that, ask us and we will tell you what we see on the bench here. It is sold as a grouping upgrade, not a power one, and you should chrono after fitting either way.\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\u003eCheck the nozzle moves freely before you close it up.\u003c\/strong\u003e A nozzle that binds, or an O-ring pinched on reassembly, will cost you more than the kit gains and can leave the engine cycling badly. If it does not feel free in the hand, take it back apart rather than pressurising it.\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 Fit the kit and the recommended bucking in the same sitting, then chrono and re-zero before you judge it. Changing two things at once sounds like bad practice, but GATE’s figures come from that combination, and swapping the bucking later means stripping the hop-up a second time. The rest of the platform is in \u003ca href=\"\/collections\/gate-ptx\" style=\"color:#cdd6f4;\"\u003eour GATE PTX section\u003c\/a\u003e.\n\u003c\/div\u003e","brand":"Gate","offers":[{"title":"Default Title","offer_id":55713613250936,"sku":"40072979","price":29.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/GATEPTXAccuracyUpgradeKitV31_TitanForgeAirsoft.webp?v=1792832316","url":"https:\/\/www.titanforgeairsoft.com\/products\/gate-ptx-accuracy-upgrade-kit-v31","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}