{"product_id":"sa-f01-flex-gen-2-hal-etu-half-tan-airsoft-rifle","title":"SA-F01 FLEX Gen.2 HAL ETU Half-Tan Airsoft rifle","description":"\u003cdiv\u003e\n\u003ch2\u003eSA-F01 FLEX Gen.2 HAL ETU Half-Tan Airsoft rifle — Technical Overview\u003c\/h2\u003e\n\u003cp\u003eThe SA-F01 FLEX Gen.2 HAL ETU Half-Tan is Specna Arms’ premier compact carbine designed for real-world airsoft reliability and field versatility. Built to outpace standard factory carbines, this Gen.2 model blends a lightweight nylon-fibre reinforced body with precision internals to deliver consistent accuracy, rapid field adjustments, and programmable fire control—right out of the box. Whether you’re sprinting CQB courses or engaging in longer field skirmishes, the SA-F01 FLEX Gen.2 HAL ETU is engineered to perform under pressure while remaining affordable.\u003c\/p\u003e\n\u003ch3\u003eKey technologies that redefine field performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDC Magnus Hop-Up chamber\u003c\/strong\u003e (Top Down Center) enables precise, repeatable BB trajectory tuning with a European patent-backed design. Expect stable accuracy across engagements and reduced shot dispersion at range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelium Flat Hop Eraser\u003c\/strong\u003e improves hop-up consistency by smoothing the ball’s undercurve, contributing to tighter groupings in varying temperatures and BB brands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eÆther Gearbox\u003c\/strong\u003e, paired with reinforced frame windows for pre-cocking and AoE inspection, ensures smooth cycling and reliable trigger response under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealed aluminium nozzle + 8mm plain bearings\u003c\/strong\u003e for reduced air leakage and longer gear life, even during prolonged skirmish rounds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Specna Arms internals\u003c\/strong\u003e include steel gears, a polycarbonate piston with steel slats, and a 6.03mm precision barrel for consistent muzzle velocity and accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady for M140 springs\u003c\/strong\u003e out of the box, with a quick-spring-change system (ESA™) that lets you adapt power to your field conditions without tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight, robust body design\u003c\/strong\u003e using nylon fibre reinforced polymer, with reinforced front\/ rear sections for durability in fast-paced CQB and outdoor skirmishes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a deeper dive into the HAL ETU capabilities, the system offers trigger detection via magnetic sensors, adjustable trigger sensitivity (5 levels), auto programming (full auto, semi, 3-round burst, 5-round burst), and sEMI programmable modes (semi, binary, AUG, sniper). The AUTO function fires a 3-round burst before switching to full auto, enabling controlled, rapid-fire sequences while maintaining weapon balance in close-quarters.\u003c\/p\u003e\n\u003ch3\u003eMaterials, build quality, and practical handling\u003c\/h3\u003e\n\u003cp\u003eThe SA-F01 FLEX Gen.2 HAL ETU Half-Tan uses a carbon-lean, nylon fibre reinforced polymer for the receiver, stock, and front sections, delivering a compact footprint without sacrificing rigidity. The enlarged SF buttstock and pistol grip are designed for ergonomic handling in dynamic play, while the lightweight construction reduces fatigue during extended skirmishes. Metal components—barrel assembly, reloading handle, and critical pins—are implemented in aluminum or ZnAl alloy to maintain durability where it matters most. The result is a resilient, responsive platform that feels “factory-built” yet is capable of evolving with your loadout.\u003c\/p\u003e\n\u003ch3\u003eWho this rifle is ideal for\u003c\/h3\u003e\n\u003cp\u003eThis carbine excels for players who value quick field-adjustments, programmable fire modes, and reliable performance in tight spaces. It suits \u003cstrong\u003eCQB players\u003c\/strong\u003e, \u003cstrong\u003espeedsoft enthusiasts\u003c\/strong\u003e, and field players who want consistent accuracy with a compact, easy-to-maneuver platform. If you’re upgrading from a standard polymer body or seeking a tougher, more configurable base for hit-and-run tactics, the SA-F01 FLEX Gen.2 HAL ETU is a strong choice.\u003c\/p\u003e\n\u003ch3\u003eUse cases and practical scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic CQB engagements\u003c\/strong\u003e benefit from the compact form factor and fast-trigger response of the HAL ETU system, allowing precision shots in congested indoor arenas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField skirmishes\u003c\/strong\u003e demand reliable power; the M140-ready setup and ESA quick-spring-change system let you tailor performance to grasslands, woodland, or urban environments without tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraining and drills\u003c\/strong\u003e—the adjustable trigger sensitivity and pre-cocking settings enable repeatable practice routines focused on trigger control and follow-through.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoadout flexibility\u003c\/strong\u003e—with a lightweight chassis and robust internals, it’s easy to pair the SA-F01 FLEX Gen.2 HAL ETU with optics, grips, and slings for rapid field adaptation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eExplore the broader Specna Arms ecosystem to complement this platform. For the full range of SPECNA ARMS products, visit our \u003ca href=\"http:\/\/\/collections\/specna-arms\"\u003eSpecna Arms Collection\u003c\/a\u003e, and for HAL ETU upgrades and compatible parts, check the \u003ca href=\"http:\/\/\/collections\/hal-etu\"\u003eHAL ETU Collection\u003c\/a\u003e. If you’re looking at upgrade pathways and tuning options, our \u003ca href=\"http:\/\/\/collections\/upgrade-parts\"\u003eUpgrade Parts\u003c\/a\u003e category covers compatible gears, springs, and kits to optimize performance on this platform.\u003c\/p\u003e\n\u003ch3\u003eSpecifications and upgrade-paths at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem\u003c\/strong\u003e: HAL ETU with programmable fire modes and auto-burst options\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHop-up\u003c\/strong\u003e: TDC Magnus Hop-Up chamber with precise, repeatable adjustments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal modernizations\u003c\/strong\u003e: Æther Gearbox, reinforced frame, pre-cocking and AoE inspection windows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel \u0026amp; Piston\u003c\/strong\u003e: 6.03mm precision barrel, polycarbonate piston with full steel slats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials\u003c\/strong\u003e: Nylon fibre reinforced polymer body; aluminum and ZnAl alloy external components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring compatibility\u003c\/strong\u003e: Ready for M140 springs; ESA quick-spring-change system for rapid field tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTo learn more about how this model compares to other airsoft carbines in terms of handling, reliability, and upgrade options, browse the broader \u003ca href=\"http:\/\/\/collections\/airsoft-rifles\"\u003eAirsoft Rifles\u003c\/a\u003e collection and pair with compatible accessories from our \u003ca href=\"http:\/\/\/collections\/upgrade-parts\"\u003eUpgrade Parts\u003c\/a\u003e catalog.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery included\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eNo\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearings diameter [mm]\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e8\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlow Back\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eNo\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eHalf-Tan\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct length [cm]\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e74\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct weight [g]\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e2170\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eElectric\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eAluminum\u003c\/div\u003e\n\u003cdiv\u003ePlastic\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMuzzle velocity [FPS]\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e390\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFire mode\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eFull-auto\u003c\/div\u003e\n\u003cdiv\u003eAdjusted burst\u003c\/div\u003e\n\u003cdiv\u003eSemi-auto\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGearbox version\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eGearbox v2\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHop-Up\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eYes\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner barrel length [mm].\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e230\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength minimal [mm]\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e650\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagazine capacity [pcs.]\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e300\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOSFET\/ETU\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eYes\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuick Spring Change system\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eYes\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of plug\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003eDEANS \/ T-connect\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of thread on the barrel\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\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":52998340510034,"sku":"SPE-01-048379","price":171.67,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8454\/7507\/files\/a0e50bd9db902e4661d20dd6a2c5d580a3321ab3_SPE_01_048379_0000.webp?v=1774202010","url":"https:\/\/airsoftmania.eu\/it-de\/products\/sa-f01-flex-gen-2-hal-etu-half-tan-airsoft-rifle","provider":"Airsoft Mania Europe","version":"1.0","type":"link"}