{"product_id":"sa-f04-flex-gen-2-bldc-hal-etu-half-tan-airsoft-rifle","title":"SA-F04 FLEX Gen.2 BLDC HAL ETU Half-Tan Airsoft rifle","description":"\u003cdiv\u003e\n\u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e \u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e \u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e \u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e \u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e \u003cp\u003eThe SA-F04 FLEX Gen.2 BLDC HAL ETU Half-Tan Airsoft rifle from Specna Arms is engineered for players who demand factory-level performance with room to tailor to their play style. Built around a high-torque BLDC motor, this carbine delivers immediate trigger response, reduced heat buildup, and longer service life thanks to a brushless transmission that minimizes wear and sparking even under rapid fire.\u003c\/p\u003e \u003cp\u003eTo maximize accuracy and consistency, the HAL ETU system integrates precise trigger sensing with programmable fire modes, automatic pre-cocking, and a low-battery alarm. This means you can push hard during skirmishes without worrying about reliability. The auto and semi modes are designed to cover a wide range of engagement scenarios—from controlled long-range shots to rapid close-quarters exchanges.\u003c\/p\u003e \u003cp\u003eExplore the SA-F04 FLEX Gen.2’s core architecture:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBLDC motor for sustained performance\u003c\/strong\u003e – no brushes means less wear, cooler operation, and higher efficiency at high speeds.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHAL ETU control\u003c\/strong\u003e – magnetic trigger sensing, active brake, and a binary trigger option for decisive, programmable fire control (including auto, semi, 3-round burst, and 5-round burst).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTop Down Center (TDC) Magnus Hop-Up\u003c\/strong\u003e chamber – unparalleled adjustment stability and precision in every shot (patented in Europe under 015052069-0001).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHelium Flat Hop Eraser\u003c\/strong\u003e – improves backspin consistency and flight stability for tighter groupings at range.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eÆther Gearbox\u003c\/strong\u003e – reinforced frame with pre-cocking, AoE inspection windows, and spring compatibility up to M140 without sacrificing performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAluminium sealed nozzle\u003c\/strong\u003e – reliable seal and consistent air throughput under heavy use.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrious build\u003c\/strong\u003e – nylon fibre-reinforced polymer body with critical metal components (flame suppressor, external barrel, bolt-catch, safety levers) for a balanced, durable platform.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eErgonomic, ambidextrous design\u003c\/strong\u003e – enlarged selectors and magazine release for fast manipulation in any position.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLight Ops Stock\u003c\/strong\u003e – compact, low-weight stock with non-slip cheek stickers and a curved rubber stock foot for shoulder stability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFactory readiness for upgrades\u003c\/strong\u003e – designed to accept a wide range of hard springs and aftermarket components without performance degradation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy the SA-F04 FLEX Gen.2 stands out\u003c\/h2\u003e \u003cp\u003eIn the field, reliability and precision matter as much as raw firepower. The Gen.2 upgrades focus on repeatable accuracy, quick follow-up shots, and ease of maintenance. The combination of the BLDC motor, HAL ETU control, and the TDC Magnus Hop-Up creates a platform that remains stable across speeds and temperatures, making it a dependable choice for both tactical drills and intense skirmishes.\u003c\/p\u003e \u003cp\u003eFor users seeking to keep a low profile while maintaining high impact, the Half-Tan finish blends with urban environments and CQB setups, while the strong yet lightweight nylon-polymer chassis keeps the rifle maneuverable in tight spaces. The model’s notable materials mix—the majority nylon reinforced polymer with strategic metal parts—delivers a durable yet balanced feel in the hands, not a heavy, top-heavy build.\u003c\/p\u003e \u003cp\u003eThe AUTO function adds a practical edge: a controlled three-round burst precedes full-auto, giving you a predictable spread when you need it. The HAL ETU’s programmable semi\/binary\/AUG\/sniper modes expand your options without requiring external tools, while the trigger-sensitivity adjustments (five levels) let you fine-tune response to your trigger pull.\u003c\/p\u003e \u003ch2\u003eWho this rifle is ideal for\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePlayers who want a high-performance, out-of-the-box platform that’s ready for precision upgrades and tune-ups.\u003c\/li\u003e \u003cli\u003ePlayers who value programmable fire control and ambidextrous ergonomics for fast-paced gameplay.\u003c\/li\u003e \u003cli\u003eTeams and individuals looking for a robust, field-tested platform with a proven gearbox and chamber design for long-term reliability.\u003c\/li\u003e \u003cli\u003eFans of Specna Arms who seek the brand’s expertise applied to a versatile, competitively priced carbine.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical use cases and scenarios\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eUrban CQB and close-quarters engagements benefit from the compact carbine profile, quick target transitions, and reliable trigger response.\u003c\/li\u003e \u003cli\u003eMid-range field games are supported by stable hop-up via the TDC Magnus chamber, enabling consistent accuracy at practical distances.\u003c\/li\u003e \u003cli\u003eLayered loadouts can leverage the HAL ETU’s multiple modes for scenario-specific fire control—semi for stealth engagements, binary for decisive rushes, and triple\/quad bursts for suppression.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInterested in more from the Specna Arms lineup? See more from the \u003cspan class=\"internal-link\" data-href=\"\/fr-ie\/collections\/specna-arms\" aria-label=\"Specna Arms collection\"\u003eSpecna Arms collection\u003c\/span\u003e and explore related high-performance carbines in our \u003cspan class=\"internal-link\" data-href=\"\/fr-ie\/collections\/airsoft-rifles\" aria-label=\"Airsoft Rifles collection\"\u003eAirsoft Rifles collection\u003c\/span\u003e for options that align with your playstyle and budget.\u003c\/p\u003e \u003ch2\u003eBuild quality, ergonomics, and maintenance tips\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eThe Hurried out-of-the-box experience is supported by reinforced frame design, which prevents frame flex under load and maintains consistent AoE alignment.\u003c\/li\u003e \u003cli\u003eRegular inspection of the TDC Magnus Hop-Up assembly ensures windage and elevation remain stable after extended use.\u003c\/li\u003e \u003cli\u003eKeep the nozzle and hop-up components clean to preserve the precision of the Helium Flat Hop Eraser and consistent BB backspin.\u003c\/li\u003e \u003cli\u003eLubricate the gearbox and moving joints with light oil designed for airsoft to optimize response and reduce wear on the Æther shell components.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor additional options and compatible upgrades, the Specna Arms platform is designed with modularity in mind, allowing you to tailor torque, response, and trigger feel to your local field rules and style. The rifle is ideal for players who want a high-performance base that can evolve with their engagement strategies over time.\u003c\/p\u003e \u003cp\u003eReady to expand or customize your build? Explore the Specna Arms collection to compare variants and configurations that complement the SA-F04 FLEX Gen.2, then pair with compatible accessories and magazines to suit your preferred loadout.\u003c\/p\u003e \u003cbr\u003e \u003ctable class=\"n54117_dictionary\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eBattery included\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eNo\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eBearings diameter [mm]\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003e8\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eBlow Back\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eNo\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eColour\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eHalf-Tan\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eProduct length [cm]\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003e75.50\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eProduct weight [g]\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003e2145\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003ePower supply\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eElectric\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eMaterial\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eAluminum\u003c\/div\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003ePlastic\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eMuzzle velocity [FPS]\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003e390\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eFire mode\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eFull-auto\u003c\/div\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eAdjusted burst\u003c\/div\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eSemi-auto\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eGearbox version\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eGearbox v2\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eHop-Up\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\u003cimg class=\"qmark showTip\" src=\"https:\/\/gunfire.com\/gfx\/standards\/qmark2.gif?r=1773830213\" alt=\"\" title=\"\"\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eYes\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eInner barrel length [mm].\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003e230\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eLength minimal [mm]\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003e670\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eMagazine capacity [pcs.]\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003e125\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eMOSFET\/ETU\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eYes\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eQuick Spring Change system\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eYes\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a2\"\u003e\n\u003cspan\u003eType of plug\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b2\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003eDEANS \/ T-connect\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"element\"\u003e\n\u003ctd class=\"n54117_item_a1\"\u003e\n\u003cspan\u003eType of thread on the barrel\u003c\/span\u003e\u003cspan class=\"n67256colon\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"n54117_item_b1\"\u003e\n\u003cdiv class=\"n54117_item_b_sub\"\u003e14mm CCW\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Specna Arms","offers":[{"title":"Default Title","offer_id":52998340346194,"sku":"SPE-01-047994","price":249.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8454\/7507\/files\/37d64eae4ab9bf663ec0ca9a2dca593bb32abc81_SPE_01_047994_0000.webp?v=1774202234","url":"https:\/\/airsoftmania.eu\/fr-ie\/products\/sa-f04-flex-gen-2-bldc-hal-etu-half-tan-airsoft-rifle","provider":"Airsoft Mania Europe","version":"1.0","type":"link"}