{"product_id":"springfield-kuna-extended-handguard","title":"Springfield KUNA Extended Handguard","description":"\u003cp\u003eThe \u003cstrong\u003eSpringfield KUNA Extended Handguard\u003c\/strong\u003e from Ether-3D provides additional forward handguard length and accessory mounting space while maintaining a lightweight, integrated profile.\u003c\/p\u003e\n\u003cp\u003eAt approximately \u003cstrong\u003e6.5 inches in overall length\u003c\/strong\u003e, the handguard extends approximately \u003cstrong\u003e2.75 inches beyond the factory receiver\u003c\/strong\u003e, providing additional support-hand space while adding only approximately \u003cstrong\u003e3.6 oz.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe design features a continuous \u003cstrong\u003eMIL-STD-1913 Picatinny top rail\u003c\/strong\u003e along with integrated \u003cstrong\u003eM-LOK mounting slots\u003c\/strong\u003e on both sides and the bottom for compatible accessories.\u003c\/p\u003e\n\u003cp\u003eManufactured from a \u003cstrong\u003ecarbon-fiber reinforced polymer\u003c\/strong\u003e, the handguard combines lightweight construction with rigidity and reduced heat transfer compared with traditional metal handguards. Each handguard is precision 3D printed in the USA with a clean carbon-fiber appearance.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately \u003cstrong\u003e6.5-inch overall length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003eExtends approximately \u003cstrong\u003e2.75 inches beyond the factory receiver\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003eLightweight design at approximately \u003cstrong\u003e3.6 oz.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003eContinuous \u003cstrong\u003eMIL-STD-1913 Picatinny top rail\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated \u003cstrong\u003eM-LOK slots\u003c\/strong\u003e on both sides and bottom\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with the \u003cstrong\u003efactory front sight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned to accommodate suppressors up to approximately \u003cstrong\u003e1.65 inches in diameter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDurable \u003cstrong\u003ecarbon-fiber reinforced polymer construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced heat transfer compared with traditional metal handguards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo cutting, drilling, or permanent firearm modifications required\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision 3D printed in the \u003cstrong\u003eUSA\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification Details\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Reinforced Polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpringfield KUNA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 6.5 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExtension Beyond Receiver\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 2.75 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 3.1 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 2.2 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 3.6 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop Rail\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMIL-STD-1913 Picatinny\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccessory Mounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM-LOK – Sides \u0026amp; Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Suppressor Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 1.65 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdditive Manufacturing \/ 3D Printed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEther-3D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eDesigned specifically for the \u003cstrong\u003eSpringfield KUNA\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe handguard incorporates a continuous 1913 Picatinny top rail that aligns with the factory rail while maintaining compatibility with the factory front sight.\u003c\/p\u003e\n\u003cp\u003eIntegrated M-LOK slots are located on both sides and the bottom of the handguard for mounting compatible accessories.\u003c\/p\u003e\n\u003cp\u003eThe internal dimensions are designed to accommodate compatible suppressors measuring up to approximately \u003cstrong\u003e1.65 inches in diameter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eDepending on suppressor diameter and accessory placement, \u003cstrong\u003eshorter M-LOK screws may be required\u003c\/strong\u003e to maintain proper internal clearance.\u003c\/p\u003e\n\u003cp\u003eAlways verify adequate clearance between the suppressor, M-LOK hardware, and inside of the handguard before use.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1 × Springfield KUNA Extended Handguard\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMounting hardware, firearm, suppressor, optics, lights, and other accessories shown in product photos are not included..\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cp\u003eEach handguard is individually produced using \u003cstrong\u003ecarbon-fiber reinforced polymer\u003c\/strong\u003e and additive manufacturing. Minor variations in surface texture or layer appearance are normal characteristics of the manufacturing process and do not necessarily indicate a defect.\u003c\/p\u003e\n\u003ch3\u003eM-LOK Torque\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum recommended torque: 11–13 in-lbs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDo not exceed the recommended torque when installing M-LOK accessories. Excessive torque can permanently damage polymer M-LOK mounting slots.\u003c\/p\u003e\n\u003cp\u003eUse a torque wrench whenever possible and verify that all M-LOK T-nuts rotate completely into the locked position before tightening.\u003c\/p\u003e\n\u003ch3\u003eSuppressor \u0026amp; Heat Safety\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis handguard should only be used with a compatible suppressor or approved muzzle extension that extends beyond the front of the handguard.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo not fire with the muzzle terminating inside the handguard.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBefore use, verify adequate clearance between the suppressor and the inside of the handguard and ensure M-LOK screws or other accessory hardware do not contact the suppressor.\u003c\/p\u003e\n\u003cp\u003eCarbon-fiber reinforced polymer provides reduced heat transfer compared with metal; however, it remains a polymer component. Repeated rapid fire, prolonged firing without adequate cooling, or other unusually aggressive firing schedules can generate temperatures beyond the material's intended operating range.\u003c\/p\u003e\n\u003cp\u003eAllow the suppressor and handguard to cool periodically during extended use.\u003c\/p\u003e\n\u003cp\u003eAlways verify proper installation, fitment, clearance, and secure attachment before use.\u003c\/p\u003e\n\u003cp\u003eThis is an \u003cstrong\u003eaftermarket accessory\u003c\/strong\u003e and is not manufactured by or affiliated with Springfield Armory.\u003c\/p\u003e\n\u003cp\u003eManufactured by \u003cstrong\u003eEther-3D in Southern Indiana, USA.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Ether-3D","offers":[{"title":"Default Title","offer_id":53861991645491,"sku":"KUNA-HG-EXT","price":48.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/9731\/2819\/files\/ChatGPT_Image_Aug_18_2026_09_56_30_AM.png?v=1787061412","url":"https:\/\/ether-3d.com\/products\/springfield-kuna-extended-handguard","provider":"Ether-3D","version":"1.0","type":"link"}