{"product_id":"polarstar-kythera-m3-orifice-screw-size-0-20","title":"PolarStar Kythera M3 Orifice Screw ( Size 0.19\" )","description":"\u003cp data-start=\"151\" data-end=\"606\"\u003eFine-tune your HPA system’s performance with the \u003cstrong data-start=\"200\" data-end=\"251\"\u003ePolarStar Kythera M3 Orifice Screw (Size 0.19\")\u003c\/strong\u003e, a precision-engineered metering screw designed to regulate the nozzle return speed in your \u003cstrong data-start=\"344\" data-end=\"358\"\u003eKythera SA\u003c\/strong\u003e system. Built to PolarStar’s exacting standards, this orifice screw gives advanced airsoft technicians and enthusiasts the ability to customize their rifle’s air efficiency, cycle timing, and rate of fire for optimal reliability and performance.\u003c\/p\u003e\r\n\r\n\u003ch4 data-start=\"608\" data-end=\"654\"\u003e\u003cstrong data-start=\"613\" data-end=\"654\"\u003ePrecision Control for HPA Performance\u003c\/strong\u003e\u003c\/h4\u003e\r\n\u003cp data-start=\"655\" data-end=\"1158\"\u003eAt the heart of the PolarStar Kythera’s mechanical system is a metering screw that controls airflow into the dump chamber. The \u003cstrong data-start=\"782\" data-end=\"802\"\u003eM3 orifice screw\u003c\/strong\u003e features a precision-machined internal orifice that determines how quickly the nozzle returns to its forward position. A smaller orifice slows down the nozzle speed, while a larger one allows faster cycling. The \u003cstrong data-start=\"1015\" data-end=\"1029\"\u003e0.19\" size\u003c\/strong\u003e strikes a perfect balance — offering smooth, consistent feeding and controlled return motion without sacrificing rate of fire.\u003c\/p\u003e\r\n\u003cp data-start=\"1160\" data-end=\"1342\"\u003eWhether you’re optimizing for smooth semi-auto precision or balancing high-speed automatic performance, this orifice screw helps you achieve the ideal timing for your unique setup.\u003c\/p\u003e\r\n\r\n\u003ch4 data-start=\"1344\" data-end=\"1394\"\u003e\u003cstrong data-start=\"1349\" data-end=\"1394\"\u003eFine-Tuning Nozzle Speed and Rate of Fire\u003c\/strong\u003e\u003c\/h4\u003e\r\n\u003cp data-start=\"1395\" data-end=\"1823\"\u003ePolarStar designed the Kythera SA to be fully mechanical yet adjustable in key aspects of its operation. The M3 orifice screw directly influences how fast air refills the dump chamber, which in turn affects the nozzle’s forward movement. A \u003cstrong data-start=\"1635\" data-end=\"1672\"\u003esmaller orifice size reduces flow\u003c\/strong\u003e, slowing the nozzle’s return and lowering rate of fire — ideal for high-pressure setups or situations where you want maximum control over each shot.\u003c\/p\u003e\r\n\u003cp data-start=\"1825\" data-end=\"2077\"\u003eAs of \u003cstrong data-start=\"1831\" data-end=\"1853\"\u003eserial number 4581\u003c\/strong\u003e, Kythera SA units ship with a \u003cstrong data-start=\"1884\" data-end=\"1910\"\u003e0.024\" screw installed\u003c\/strong\u003e as standard. The \u003cstrong data-start=\"1928\" data-end=\"1945\"\u003e0.19\" orifice\u003c\/strong\u003e provides slightly slower nozzle speed, making it perfect for players who prefer a balanced firing response with reliable feeding.\u003c\/p\u003e\r\n\r\n\u003ch4 data-start=\"2079\" data-end=\"2126\"\u003e\u003cstrong data-start=\"2084\" data-end=\"2126\"\u003eOrifice Size and Pressure Relationship\u003c\/strong\u003e\u003c\/h4\u003e\r\n\u003cp data-start=\"2127\" data-end=\"2595\"\u003eOne key factor to understand is how \u003cstrong data-start=\"2163\" data-end=\"2209\"\u003einput pressure interacts with orifice size\u003c\/strong\u003e. Smaller orifices limit recharge rate and reduce nozzle speed at the same air pressure. However, in most cases, these smaller orifices are used at higher input pressures — where air velocity is naturally increased. This means that while the orifice reduces speed, it helps maintain a consistent firing rhythm and prevents over-cycling that could cause feeding issues or double feeds.\u003c\/p\u003e\r\n\u003cp data-start=\"2597\" data-end=\"2865\"\u003eIf your Kythera system is already cycling reliably, there’s typically little to gain from drastically reducing nozzle speed. The \u003cstrong data-start=\"2726\" data-end=\"2742\"\u003e0.015\" screw\u003c\/strong\u003e, for instance, is designed for extreme flow reduction and is not recommended except in highly specific tuning scenarios.\u003c\/p\u003e\r\n\r\n\u003ch4 data-start=\"2867\" data-end=\"2912\"\u003e\u003cstrong data-start=\"2872\" data-end=\"2912\"\u003eEasy Installation — Handle with Care\u003c\/strong\u003e\u003c\/h4\u003e\r\n\u003cp data-start=\"2913\" data-end=\"3297\"\u003eEach \u003cstrong data-start=\"2918\" data-end=\"2956\"\u003ePolarStar Kythera M3 Orifice Screw\u003c\/strong\u003e is designed with a \u003cstrong data-start=\"2976\" data-end=\"2995\"\u003e1.5mm hex drive\u003c\/strong\u003e for precise installation. However, due to its small size and delicate machining, it’s important to use care when handling. The manufacturer strongly advises that the screw be installed \u003cstrong data-start=\"3181\" data-end=\"3202\"\u003efinger-tight only\u003c\/strong\u003e — no torque required — to prevent stripping the hex drive or damaging the screw’s threading.\u003c\/p\u003e\r\n\r\n\u003ch4 data-start=\"3299\" data-end=\"3338\"\u003e\u003cstrong data-start=\"3304\" data-end=\"3338\"\u003eCompatibility and Construction\u003c\/strong\u003e\u003c\/h4\u003e\r\n\u003cp data-start=\"3339\" data-end=\"3664\"\u003eThis metering screw is fully \u003cstrong data-start=\"3368\" data-end=\"3412\"\u003ecompatible with the PolarStar Kythera SA\u003c\/strong\u003e system, providing a direct drop-in replacement for your existing screw. Manufactured from high-quality materials under PolarStar’s strict quality control, it ensures precision airflow metering, durability, and long-term stability in your HPA system.\u003c\/p\u003e\r\n\r\n\u003ch4 data-start=\"3666\" data-end=\"3695\"\u003e\u003cstrong data-start=\"3671\" data-end=\"3695\"\u003eWhy Choose PolarStar\u003c\/strong\u003e\u003c\/h4\u003e\r\n\u003cp data-start=\"3696\" data-end=\"4114\"\u003e\u003cstrong data-start=\"3696\" data-end=\"3727\"\u003ePolarStar Precision Airsoft\u003c\/strong\u003e has been setting the gold standard for HPA innovation since 2009. From their industry-changing \u003cstrong data-start=\"3823\" data-end=\"3840\"\u003eFusion Engine\u003c\/strong\u003e to the fully mechanical \u003cstrong data-start=\"3865\" data-end=\"3879\"\u003eKythera SA\u003c\/strong\u003e, PolarStar continues to lead the market with unmatched reliability and precision craftsmanship. Every component — including small parts like the M3 Orifice Screw — reflects their commitment to performance and engineering excellence.\u003c\/p\u003e\r\n\u003cp data-start=\"4116\" data-end=\"4299\"\u003eWhen you choose PolarStar, you’re not just buying a part — you’re investing in a system designed by engineers, tested by professionals, and trusted by top airsoft players worldwide.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"4301\" data-end=\"4304\"\u003e\r\n\r\n\u003ch3 data-start=\"4306\" data-end=\"4327\"\u003e\u003cstrong data-start=\"4310\" data-end=\"4327\"\u003eKey Features:\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cul data-start=\"4328\" data-end=\"4765\"\u003e\r\n \t\u003cli data-start=\"4328\" data-end=\"4379\"\u003e\r\n\u003cp data-start=\"4330\" data-end=\"4379\"\u003eRegulates \u003cstrong data-start=\"4340\" data-end=\"4363\"\u003enozzle return speed\u003c\/strong\u003e and flow rate\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4380\" data-end=\"4442\"\u003e\r\n\u003cp data-start=\"4382\" data-end=\"4442\"\u003e\u003cstrong data-start=\"4382\" data-end=\"4413\"\u003ePrecision orifice machining\u003c\/strong\u003e ensures consistent airflow\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4443\" data-end=\"4510\"\u003e\r\n\u003cp data-start=\"4445\" data-end=\"4510\"\u003e\u003cstrong data-start=\"4445\" data-end=\"4462\"\u003e0.19” orifice\u003c\/strong\u003e provides balanced performance for most setups\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4511\" data-end=\"4567\"\u003e\r\n\u003cp data-start=\"4513\" data-end=\"4567\"\u003eCompatible with \u003cstrong data-start=\"4529\" data-end=\"4553\"\u003ePolarStar Kythera SA\u003c\/strong\u003e HPA systems\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4568\" data-end=\"4633\"\u003e\r\n\u003cp data-start=\"4570\" data-end=\"4633\"\u003eAllows for \u003cstrong data-start=\"4581\" data-end=\"4598\"\u003ecustom tuning\u003c\/strong\u003e of nozzle speed and rate of fire\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4634\" data-end=\"4698\"\u003e\r\n\u003cp data-start=\"4636\" data-end=\"4698\"\u003e\u003cstrong data-start=\"4636\" data-end=\"4666\"\u003eDurable metal construction\u003c\/strong\u003e for longevity and reliability\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4699\" data-end=\"4765\"\u003e\r\n\u003cp data-start=\"4701\" data-end=\"4765\"\u003eEasy installation with \u003cstrong data-start=\"4724\" data-end=\"4763\"\u003e1.5mm hex drive (finger tight only)\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Polarstar","offers":[{"title":"Default Title","offer_id":47468121915622,"sku":null,"price":24.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/8d0379a2-3021-500x500-1.png?v=1774002161","url":"https:\/\/ngrwzj-i1.myshopify.com\/products\/polarstar-kythera-m3-orifice-screw-size-0-20","provider":"CQC Airsoft ","version":"1.0","type":"link"}