{"product_id":"gate-pulsar-s-hpa-engine","title":"GATE PULSAR S HPA Engine — Single Solenoid, with TITAN II or ASTER II Bluetooth","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\u003cstrong style=\"color:#1a6b3a;\"\u003eGATE PULSAR S — the world’s smallest single-solenoid HPA engine, with a Bluetooth optical trigger unit built in.\u003c\/strong\u003e\u003c\/div\u003e\n\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⚠ \u003cstrong\u003eThis is an engine, not a complete gun.\u003c\/strong\u003e It replaces your gearbox internals and needs an external \u003ca href=\"\/collections\/hpa-tanks\" style=\"color:#1B3A6B;\"\u003eHPA tank\u003c\/a\u003e, a secondary \u003ca href=\"\/collections\/hpa-regulators\" style=\"color:#1B3A6B;\"\u003eregulator\u003c\/a\u003e and an \u003ca href=\"\/collections\/hpa-lines\" style=\"color:#1B3A6B;\"\u003eHPA line\u003c\/a\u003e to run — none included. New to HPA? Start with our \u003ca href=\"\/pages\/hpa-airsoft-uk-the-complete-guide\" style=\"color:#1B3A6B;\"\u003ecomplete HPA guide\u003c\/a\u003e.\u003c\/div\u003e\n\u003cp\u003eThe PULSAR S was the engine that put GATE's optical trigger technology inside an HPA system for the first time. Most HPA engines give you a pneumatic valve and a basic board for dwell and rate of fire. The PULSAR S drops a full TITAN II or ASTER II Bluetooth unit into the engine itself, so the trigger reads position optically rather than through a switch, and everything is configurable from your phone.\u003c\/p\u003e\n\u003cp\u003eIn practice that means a trigger you can genuinely tune. Fifty levels of sensitivity inside the first millimetre of travel lets you set a hair trigger that breaks almost on contact, or deliberately lengthen it for milsim. Binary mode fires on press and release. Burst is configurable from two to nine rounds. Rate of fire runs from 1 to 100 RPS, all adjustable live through the GCS app without opening the gun.\u003c\/p\u003e\n\u003cp\u003eIt is also remarkably small — 88mm long and 75g, the smallest single-solenoid HPA engine made. It runs open bolt at 60 to 140 PSI, delivering 200 to 550 FPS depending on how you set it, and uses roughly 1 PSI per shot from a 48ci bottle at 90 PSI.\u003c\/p\u003e\n\u003cp\u003eChoose your wiring and control unit below. Rear wired suits most standard builds; front wired suits builds with the battery in the stock. TITAN II is the full-feature unit, ASTER II the more streamlined option — both give you Bluetooth GCS control.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eSpecifications\u003c\/h2\u003e\n\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;\"\u003eEngine type\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSingle solenoid HPA — open bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eOperating pressure\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e60–140 PSI (high pressure only, not SLP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAdjustable ROF\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e1–100 RPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eVelocity\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e200–550 FPS (setup dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGas consumption\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e~1 PSI per shot (90 PSI, 48ci \/ 0.8L 300 bar bottle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eFCU\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTITAN II or ASTER II Bluetooth — optical trigger, GCS app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTrigger sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e50 levels in the first 1mm of travel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eFire modes\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSemi, binary, burst (2–9), full-auto\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e88mm × 25.4mm\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;\"\u003e75g — smallest single-solenoid HPA engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSolenoid voltage\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e5–8.4V — do not exceed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGearbox\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eV2 — rear or front wired\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eConnectivity\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBluetooth 5.2, GCS app (iOS, Android, macOS, Windows, Wear OS, watchOS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eOperating temperature\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e-15°C to +50°C\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\u003c\/table\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eGood to know before you buy\u003c\/h2\u003e\u003cp\u003eThe PULSAR S is the more economical route into GATE HPA, and it rewards a well-built gun: because it runs open bolt with a conventional nozzle, it wants the gearbox axially aligned properly to shoot its best. If your build is a known-good V2, that is not an issue. If it is an older or looser gearbox, the closed-bolt \u003ca href=\"\/products\/gate-pulsar-d-hpa-engine\" style=\"color:#1B3A6B;\"\u003ePULSAR D\u003c\/a\u003e is far more forgiving. Fitting an HPA engine is not a beginner job — we fit and configure these in our workshop through the \u003ca href=\"\/products\/hpa-tech-service-booking\" style=\"color:#1B3A6B;\"\u003eHPA tech service\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the PULSAR S and the PULSAR D?\u003c\/strong\u003e\u003cbr\u003eThe S is single-solenoid and open bolt: lighter, smaller, faster (up to 100 RPS) and cheaper. The D is dual-solenoid and closed bolt: heavier and capped at 40 RPS, but more accurate, more gas-efficient and much less sensitive to how well your gearbox is aligned. GATE themselves say the S is the more economical choice if you can align the gearbox correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTITAN II or ASTER II?\u003c\/strong\u003e\u003cbr\u003eBoth give you Bluetooth GCS control and the optical trigger. TITAN II is the fuller-featured unit; ASTER II is the more streamlined option. If you are unsure, ask us.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRear or front wired?\u003c\/strong\u003e\u003cbr\u003eRear wired is the usual choice and suits most standard builds. Front wired suits builds running the battery in the stock or rear-loaded electronics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit my gun?\u003c\/strong\u003e\u003cbr\u003eIt is a V2 gearbox engine, which covers most M4-pattern AEGs. Gearboxes with a factory electronic trigger unit, V3 platforms and offset-nozzle designs need checking first — message us the make and model and we will confirm free of charge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat else do I need?\u003c\/strong\u003e\u003cbr\u003eAn HPA tank, a secondary regulator and a line, plus a 5–8.4V battery for the FCU. None are included with the engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan you fit it for me?\u003c\/strong\u003e\u003cbr\u003eYes. We fit, wire and configure GATE engines in our workshop, including full GCS programming and chronographing to your site limit.\u003c\/p\u003e\n\u003cdiv style=\"background:#fde8e8;border-left:4px solid #c0392b;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e⛔ \u003cstrong\u003eDo not exceed 8.4V.\u003c\/strong\u003e The solenoid voltage range is 5–8.4V — a higher-voltage battery will damage the unit. Run within 60–140 PSI through a secondary regulator, and never connect an engine directly to a tank output.\u003c\/div\u003e\n\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 we fit, wire and programme GATE engines in our workshop — see the \u003ca href=\"\/products\/hpa-tech-service-booking\" style=\"color:#cdd6f4;\"\u003eHPA tech service\u003c\/a\u003e, browse \u003ca href=\"\/collections\/hpa-engines\" style=\"color:#cdd6f4;\"\u003eHPA engines\u003c\/a\u003e, or \u003ca href=\"https:\/\/wa.me\/447874452357\" style=\"color:#cdd6f4;\"\u003emessage us on WhatsApp\u003c\/a\u003e and we will spec the right one for your build.\u003c\/div\u003e","brand":"Gate","offers":[{"title":"TITAN II \/ Rear Wired","offer_id":55507873169784,"sku":"80059386","price":360.95,"currency_code":"GBP","in_stock":false},{"title":"TITAN II \/ Front Wired","offer_id":55507873202552,"sku":"79520488","price":360.95,"currency_code":"GBP","in_stock":false},{"title":"ASTER II \/ Rear Wired","offer_id":55542864806264,"sku":"41406954","price":360.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/pulsar-2_1-Photoroom.jpg?v=1764255223","url":"https:\/\/www.titanforgeairsoft.com\/products\/gate-pulsar-s-hpa-engine","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}