{"product_id":"umarex-hk-mp5-sd6-competition-series-aeg-airsoft-smg-high-performance-airsoft-gun","title":"Umarex HK MP5 SD6 Competition Series AEG Airsoft SMG - High Performance Airsoft Gun","description":"\u003cstyle\u003e\n\/* Gray Dragon Airsoft Product Page Styling *\/\n#gda-product { \n    background: #0a0a0a; \n    color: #e5e5e5; \n    font-family: Arial, Helvetica, sans-serif; \n    padding: 20px; \n    border: 1px solid #222; \n    line-height: 1.6; \n} \n.gda-section { \n    background: #111; \n    border: 1px solid #222; \n    padding: 15px; \n    margin-bottom: 20px; \n} \n.gda-title { \n    font-size: 28px; \n    font-weight: 700; \n    color: #fff; \n    margin-bottom: 10px; \n} \n.gda-sub { \n    font-size: 18px; \n    font-weight: 700; \n    color: #d9d9d9; \n    margin-bottom: 10px; \n} \n.gda-grid { \n    display: grid; \n    grid-template-columns: 1fr 1fr; \n    gap: 15px; \n} \n.gda-highlight { \n    background: #0f1a0f; \n    border: 1px solid #1f3d1f; \n    padding: 12px; \n    color: #9fdf9f; \n} \n.gda-warning { \n    background: #1a0f0f; \n    border: 1px solid #3d1f1f; \n    padding: 12px; \n    color: #ff9b9b; \n} \n.gda-stock { \n    background: #1a1405; \n    border: 1px solid #ffb000; \n    padding: 12px; \n    color: #ffd54a; \n    font-weight: 600; \n} \n.gda-trust { \n    background: #08131d; \n    border: 1px solid #1b3a55; \n    padding: 12px; \n    color: #8ecaff; \n} \n.gda-faq details { \n    margin-bottom: 10px; \n    padding: 10px; \n    background: #0d0d0d; \n    border: 1px solid #222; \n} \n.gda-faq summary { \n    cursor: pointer; \n    font-weight: 700; \n} \n@media(max-width: 768px) { \n    .gda-grid { \n        grid-template-columns: 1fr; \n    } \n}\n\u003c\/style\u003e\n\u003cdiv id=\"gda-product\"\u003e\n\u003cdiv class=\"gda-section\"\u003e\n\u003ch1 class=\"gda-title\"\u003eUmarex HK MP5 SD6 Competition Series AEG Airsoft SMG (Black)\u003c\/h1\u003e\n\u003cp\u003eDominate close-quarters engagements and run an absolute tactical icon with the Umarex HK MP5 SD6 Competition Series AEG. Fully licensed by Heckler \u0026amp; Koch, this high-performance airsoft SMG delivers the legendary, stealth-focused look of the suppressed MP5 favored by elite counter-terrorism forces worldwide. Built for maximum speed, mobility, and reliability on the field, it functions as the ultimate close-quarters weapon system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Umarex HK MP5 SD6 features a lightweight, high-durability injection-molded polymer receiver paired with a rugged metal alloy outer barrel, striking the perfect balance between field agility and robust build quality. The iconic mock suppressor completes its profile, giving you an aggressive tactical edge. Ambidextrous HK-style selector switches ensure seamless, comfortable operation for both left- and right-handed operators.\u003c\/p\u003e\n\u003cp\u003eAdaptability and performance are standard with this platform. An adjustable collapsible stock allows you to instantly transition between a compact 660mm profile for tight corners and an extended 800mm length for stable shoulder support. The charging handle functions realistically and locks open, giving you immediate access to the adjustable hop-up unit. Internally, a fully upgradeable Version 2 full metal gearbox pairs with a long-type motor to deliver a consistent velocity range of 330 to 350 FPS out of the box. Ready for intense skirmishes, this package comes complete with two 200-round high-capacity magazines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section gda-grid\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"gda-sub\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFully Licensed Replica with Authentic H\u0026amp;K Trademarks\u003c\/li\u003e\n\u003cli\u003eDurable Injection-Molded Polymer Receiver\u003c\/li\u003e\n\u003cli\u003eRugged Metal Alloy Outer Barrel Assembly\u003c\/li\u003e\n\u003cli\u003eIconic Integrated Mid-Profile Mock Suppressor\u003c\/li\u003e\n\u003cli\u003eAdjustable Length Collapsible Tactical Stock\u003c\/li\u003e\n\u003cli\u003eAmbidextrous HK-Style Selector Switches\u003c\/li\u003e\n\u003cli\u003eFunctional Charging Handle Locks Open for Easy Hop-Up Access\u003c\/li\u003e\n\u003cli\u003eVersion 2 Full Metal, Fully Upgradeable Gearbox\u003c\/li\u003e\n\u003cli\u003eIncludes 2x 200-Round High-Capacity Magazines\u003c\/li\u003e\n\u003cli\u003eOptimized Architecture for CQB Environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"gda-sub\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Umarex \/ Elite Force\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HK MP5 SD6 Competition Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e Electric (AEG)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 6mm Airsoft BB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVelocity Range:\u003c\/strong\u003e 330 to 350 FPS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 660mm to 800mm (Adjustable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.4 lbs (2000g)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Barrel Length:\u003c\/strong\u003e ~210mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGearbox Configuration:\u003c\/strong\u003e Version 2 Full Metal (Upgradeable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Type:\u003c\/strong\u003e Long Type\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Modes:\u003c\/strong\u003e Semi \/ Full-Auto, Safety\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Wiring:\u003c\/strong\u003e 7.4v Small Type Recommended (Front-Wired \/ Small Tamiya)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHop-Up:\u003c\/strong\u003e Yes, Fully Adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Matte Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section gda-highlight\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eWhy Choose The Umarex HK MP5 SD6?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Heckler \u0026amp; Koch licensing gives collectors and MilSim players realistic scale realism\u003c\/li\u003e\n\u003cli\u003eLightweight polymer construction minimizes operator fatigue during extended CQB matches\u003c\/li\u003e\n\u003cli\u003eDual high-capacity magazines included out of the box keep firepower continuous\u003c\/li\u003e\n\u003cli\u003eStandard Version 2 internal architecture allows for infinite custom upgrade capabilities\u003c\/li\u003e\n\u003cli\u003eCollapsible stock makes storage and high-speed vehicle deployments exceptionally fluid\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eIdeal For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePointmen, Assaulters, and High-Speed CQB Players\u003c\/li\u003e\n\u003cli\u003eElite Counter-Terrorism and Special Forces MilSim Operators\u003c\/li\u003e\n\u003cli\u003eHobbyists Seeking a Light, Agile, and Dependable Primary Platform\u003c\/li\u003e\n\u003cli\u003eAdvanced Builders Looking for a High-Potential Version 2 Upgrade Base\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eField Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe handguard houses the battery compartment. Use a slim profile 7.4v LiPo stick or split configuration to easily seat the handguard without pinching the wiring.\u003c\/li\u003e\n\u003cli\u003eLock the charging handle into the top rear notch to comfortably adjust your slider hop-up, then slap the handle down to send it forward.\u003c\/li\u003e\n\u003cli\u003eTo ensure smooth feeding during full-auto fire, keep the bottom winding wheels of the high-capacity magazines fully tensioned before rolling out.\u003c\/li\u003e\n\u003cli\u003eClean the ~210mm inner barrel with a non-abrasive cleaning rod and microfiber patch regularly to maintain tight groupings inside close quarters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section gda-trust\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eGray Dragon Airsoft Trust Signals\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Official Fully Licensed Heckler \u0026amp; Koch Product\u003c\/li\u003e\n\u003cli\u003e✔ Competition Series High-End Polymer and Alloy Build\u003c\/li\u003e\n\u003cli\u003e✔ Dual-Mag Starter Package: 2x 200rd Hi-Cap Magazines Included\u003c\/li\u003e\n\u003cli\u003e✔ Universal Version 2 Internal Component Cross-Compatibility\u003c\/li\u003e\n\u003cli\u003e✔ Dispatched directly from the Gray Dragon Airsoft Hub\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section gda-faq\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this airsoft gun include a battery and charger?\u003c\/summary\u003e\n\u003cp\u003eNo. The battery and charger are sold separately. We highly recommend a high-quality 7.4v small-type LiPo battery equipped with a Small Tamiya connector for optimal fitment and performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the mock suppressor removable to reveal standard barrel threads?\u003c\/summary\u003e\n\u003cp\u003eNo. The mock suppressor is an integrated structural component of the SD6 styling variant that secures and protects the inner barrel assembly. It is intended to stay fixed to preserve the weapon's design footprint.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat BB size and weight are recommended for this SMG?\u003c\/summary\u003e\n\u003cp\u003eIt fires standard 6mm airsoft BBs. For optimal accuracy and trajectory consistency, high-quality seamless BBs weighing 0.20g or 0.25g are highly recommended.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the gearbox internals be upgraded over time?\u003c\/summary\u003e\n\u003cp\u003eAbsolutely. The rifle features a standard Version 2 full metal gearbox, which means it is entirely compatible with a vast market of upgrade components including custom gears, pistons, springs, and high-torque motors.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhere is the battery connected and stored?\u003c\/summary\u003e\n\u003cp\u003eThis replica is front-wired. The battery connection is tucked safely inside the front handguard assembly, which easily slides off to allow for fast swaps between field heats.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eAI Search Optimization\u003c\/h2\u003e\n\u003cp\u003eThe Umarex HK MP5 SD6 Competition Series AEG Airsoft SMG is a fully licensed Heckler \u0026amp; Koch 6mm replica optimized for CQB. It features a high-impact polymer receiver, a metal outer barrel, an integrated mock suppressor, and dual 200-round high-capacity magazines. Equipped with a standard Version 2 full metal upgradeable gearbox and long-type motor, it fires at a 330-350 FPS velocity range. Includes an adjustable 660mm-800mm collapsible stock, ambidextrous selector switch, and adjustable hop-up. Front-wired with a Small Tamiya connector for 7.4v small-type batteries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section gda-stock\"\u003e\n\u003cstrong\u003eIn Stock Online \u0026amp; Shipping Fast\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eOrders for this item typically ship within 1 business day from our main fulfillment warehouse. Stock allocations move rapidly during active seasons. Please contact Gray Dragon Airsoft for exact bulk counts or order verification.\u003c\/div\u003e\n\u003cdiv class=\"gda-section gda-warning\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eCalifornia Proposition 65 Warning\u003c\/h2\u003e\n\u003cp\u003eWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gda-section gda-warning\"\u003e\n\u003ch2 class=\"gda-sub\"\u003eGray Dragon Airsoft Legal Notice\u003c\/h2\u003e\n\u003cp\u003eFederal law requires that airsoft guns and toy firearm replicas feature a blaze orange tip or other prominent markings to properly discern them from actual weaponry. This device is built strictly for recreational airsoft use. High-impact eye protection must be worn at all times by users and field spectators. Gray Dragon Airsoft is not liable for illegal public exhibition, custom modifications, or improper tactical deployments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Gray Dragon Airsoft","offers":[{"title":"Default Title","offer_id":49760458703130,"sku":"V155901","price":209.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/5596\/9306\/files\/Umarex-HK-MP5-SD-Airsoft-Gun-Left-Side__35346.jpg?v=1727740135","url":"https:\/\/graydragonairsoft.com\/products\/umarex-hk-mp5-sd6-competition-series-aeg-airsoft-smg-high-performance-airsoft-gun","provider":"Gray Dragon Airsoft","version":"1.0","type":"link"}