{"product_id":"geissele-10-5-mk4-m-lok-free-float-handguard","title":"Geissele - 10.5\" MK4 M-LOK Free Float Handguard Black","description":"\u003cp\u003e\u003cb\u003eRugged, modular, and built for hard use\u003c\/b\u003e, the Geissele 10.5\" Super Modular Rail MK4 M-LOK is designed for shooters who demand durability, precision, and adaptability in their AR-15 platform.\u003c\/p\u003e\n\n\u003cp\u003eThe MK4 stands out with \u003cb\u003eintegrated M1913 Picatinny rail sections\u003c\/b\u003e at the front of the handguard in the 3, 6, and 9 o’clock positions, allowing for rapid attachment of lights, lasers, and other mission-critical accessories without additional mounts. Combined with full M-LOK compatibility, this rail offers exceptional versatility for any tactical or preparedness-focused build.\u003c\/p\u003e\n\n\u003cp\u003eEngineered with aggressive venting, the MK4 maximizes heat dissipation during sustained fire while keeping overall weight low. Precision machined from 7000 series aluminum and finished with a Type III hardcoat anodize, it delivers outstanding strength, corrosion resistance, and long-term reliability.\u003c\/p\u003e\n\n\u003cp\u003eAt its core, Geissele’s proprietary 2.25\" barrel nut system provides increased surface contact with the upper receiver, ensuring superior alignment, enhanced accuracy, and repeatable zero retention—even after maintenance and reinstallation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eKey Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFree float M-LOK handguard for AR-15 platforms\u003c\/li\u003e\n\u003cli\u003eIntegrated Picatinny rail sections at 3, 6, and 9 o’clock (front)\u003c\/li\u003e\n\u003cli\u003eM-LOK slots at 3, 6, 9 o’clock and upper 45° quadrants\u003c\/li\u003e\n\u003cli\u003eEnhanced heat dissipation with aggressive venting design\u003c\/li\u003e\n\u003cli\u003eRigid 7000 series aluminum construction\u003c\/li\u003e\n\u003cli\u003eType III hardcoat anodized finish for durability\u003c\/li\u003e\n\u003cli\u003eProprietary 2.25\" barrel nut for improved alignment and accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 10.5\"\u003c\/li\u003e\n\u003cli\u003eHeight: 2.4\"\u003c\/li\u003e\n\u003cli\u003eInner Diameter: 1.35\"\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 2.11\"\u003c\/li\u003e\n\u003cli\u003eWeight: 10.6 oz (12.74 oz with barrel nut)\u003c\/li\u003e\n\u003cli\u003eMaterial: 7000 Series Aluminum\u003c\/li\u003e\n\u003cli\u003eFinish: Type-3 Hardcoat Anodized\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eImportant Notes:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with Mil-Spec M4 upper receivers (billet compatibility not guaranteed)\u003c\/li\u003e\n\u003cli\u003eBarrel nut wrench required for installation — \u003ca href=\"https:\/\/mountainready.online\/collections\/whats-new\/products\/geissele-barrel-nut-wrench\"\u003eshop the Geissele Barrel Nut Wrench here\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003ePerfect for duty rifles, tactical builds, and preparedness loadouts\u003c\/b\u003e, the MK4 delivers unmatched strength and modular capability when performance matters most.\u003c\/p\u003e","brand":"Geissele Automatics","offers":[{"title":"Default Title","offer_id":43172289118297,"sku":"RSR-GEI05-1656B","price":349.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/9860\/2329\/files\/GEI05-1656B_1_HR.jpg?v=1774307339","url":"https:\/\/mountainready.online\/products\/geissele-10-5-mk4-m-lok-free-float-handguard","provider":"mountainready.online","version":"1.0","type":"link"}